Science

turning-the-moon-into-a-fuel-depot-will-take-a-lot-of-power

Turning the Moon into a fuel depot will take a lot of power


Getting oxygen from regolith takes 24 kWh per kilogram, and we’d need tonnes.

Without adjustments for relativity, clocks here and on the Moon would rapidly diverge. Credit: NASA

If humanity is ever to spread out into the Solar System, we’re going to need to find a way to put fuel into rockets somewhere other than the cozy confines of a launchpad on Earth. One option for that is in low-Earth orbit, which has the advantage of being located very close to said launch pads. But it has the considerable disadvantage of requiring a lot of energy to escape Earth’s gravity—it takes a lot of fuel to put substantially less fuel into orbit.

One alternative is to produce fuel on the Moon. We know there is hydrogen and oxygen present, and the Moon’s gravity is far easier to overcome, meaning more of what we produce there can be used to send things deeper into the Solar System. But there is a tradeoff: any fuel production infrastructure will likely need to be built on Earth and sent to the Moon.

How much infrastructure is that going to involve? A study released today by PNAS evaluates the energy costs of producing oxygen on the Moon, and finds that they’re substantial: about 24 kWh per kilogram. This doesn’t sound bad until you start considering how many kilograms we’re going to eventually need.

Free the oxygen!

The math that makes refueling from the Moon appealing is pretty simple. “As a rule of thumb,” write the authors of the new study on the topic, “rockets launched from Earth destined for [Earth-Moon Lagrange Point 1] must burn ~25 kg of propellant to transport one kg of payload, whereas rockets launched from the Moon to [Earth-Moon Lagrange Point 1] would burn only ~four kg of propellant to transport one kg of payload.” Departing from the Earth-Moon Lagrange Point for locations deeper into the Solar System also requires less energy than leaving low-Earth orbit, meaning the fuel we get there is ultimately more useful, at least from an exploration perspective.

But, of course, you need to make the fuel there in the first place. The obvious choice for that is water, which can be split to produce hydrogen and oxygen. We know there is water on the Moon, but we don’t yet know how much, and whether it’s concentrated into large deposits. Given that uncertainty, people have also looked at other materials that we know are present in abundance on the Moon’s surface.

And there’s probably nothing more abundant on that surface than regolith, the dust left over from constant tiny impacts that have, over time, eroded lunar rocks. The regolith is composed of a variety of minerals, many of which contain oxygen, typically the heavier component of rocket fuel. And a variety of people have figured out the chemistry involved in separating oxygen from these minerals on the scale needed for rocket fuel production.

But knowing the chemistry is different from knowing what sort of infrastructure is needed to get that chemistry done at a meaningful scale. To get a sense of this, the researchers decided to focus on isolating oxygen from a mineral called ilmenite, or FeTiO3. It’s not the easiest way to get oxygen—iron oxides win out there—but it’s well understood. Someone actually patented oxygen production from ilmenite back in the 1970s, and two hardware prototypes have been developed, one of which may be sent to the Moon on a future NASA mission.

The researchers propose a system that would harvest regolith, partly purify the ilmenite, then combine it with hydrogen at high temperatures, which would strip the oxygen out as water, leaving behind purified iron and titanium (both of which may be useful to have). The resulting water would then be split to feed the hydrogen back into the system, while the oxygen can be sent off for use in rockets.

(This wouldn’t solve the issue of what that oxygen will ultimately oxidize to power a rocket. But oxygen is typically the heavier component of rocket fuel combinations—typically about 80 percent of the mass—and so the bigger challenge to get to a fuel depot.)

Obviously, this process will require a lot of infrastructure, like harvesters, separators, high-temperature reaction chambers, and more. But the researchers focus on a single element: how much power will it suck down?

More power!

To get their numbers, the researchers made a few simplifying assumptions. These include assuming that it’s possible to purify ilmenite from raw regolith and that it will be present in particles small enough that about half the material present will participate in chemical reactions. They ignored both the potential to get even more oxygen from the iron and titanium oxides present, as well as the potential for contamination from problematic materials like hydrogen sulfide or hydrochloric acid.

The team found that almost all of the energy is consumed at three steps in the process: the high-temperature hydrogen reaction that produces water (55 percent), splitting the water afterwards (38 percent), and converting the resulting oxygen to its liquid form (five percent). The typical total usage, depending on factors like the concentration of ilmenite in the regolith, worked out to be about 24 kW-hr for each kilogram of liquid oxygen.

Obviously, the numbers are sensitive to how efficiently you can do things like heat the reaction mix. (It might be possible to do this heating with concentrated solar, avoiding the use of electricity for this entirely, but the authors didn’t analyze that.) But it was also sensitive to less obvious efficiencies. For example, a better separation of the ilmenite from the rest of the regolith means you’re using less energy to heat contaminants. So, while the energetic cost of that separation is small, it pays off to do it effectively.

Based on orbital observations, the researchers map out the areas where ilmenite is present at high enough concentrations for this approach to make sense. These include some of the mares on the near side of the Moon, so they’re easy to get to.

A map of the lunar surface with locations highlighted in color.

A map of the lunar surface, with areas with high ilmenite concentrations shown in blue.

Credit: Leger, et. al.

A map of the lunar surface, with areas with high ilmenite concentrations shown in blue. Credit: Leger, et. al.

On its own, 24 kWh doesn’t seem like a lot of power. The problem is that we will need a lot of kilograms. The researchers estimate that getting an empty SpaceX Starship from the lunar surface to the Earth-Moon Lagrange Point takes 80 tonnes of liquid oxygen. And a fully fueled starship can hold over 500 tonnes of liquid oxygen.

We can compare that to something like the solar array on the International Space Station, which has a capacity of about 100 kW. That means it could power the production of about four kilograms of oxygen an hour. At that rate, it’ll take a bit over 10 days to produce a tonne, and a bit more than two years to get enough oxygen to get an empty Starship to the Lagrange Point—assuming 24-7 production. Being on the near side, they will only produce for half the time, given the lunar day.

Obviously, we can build larger arrays than that, but it boosts the amount of material that needs to be sent to the Moon from Earth. It may potentially make more sense to use nuclear power. While that would likely involve more infrastructure than solar arrays, it would allow the facilities to run around the clock, thus getting more production from everything else we’ve shipped from Earth.

This paper isn’t meant to be the final word on the possibilities for lunar-based refueling; it’s simply an early attempt to put hard numbers on what ultimately might be the best way to explore our Solar System. Still, it provides some perspective on just how much effort we’ll need to make before that sort of exploration becomes possible.

PNAS, 2025. DOI: 10.1073/pnas.2306146122 (About DOIs).

Photo of John Timmer

John is Ars Technica’s science editor. He has a Bachelor of Arts in Biochemistry from Columbia University, and a Ph.D. in Molecular and Cell Biology from the University of California, Berkeley. When physically separated from his keyboard, he tends to seek out a bicycle, or a scenic location for communing with his hiking boots.

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Despite court orders, climate and energy programs stalled by Trump freeze


Chief of the EPA is also trying to claw back $20 billion, citing alleged wrongdoing.

President Donald Trump’s freeze on federal funding shows little sign of thawing for climate, energy and environmental justice programs.

Despite two federal court orders directing the administration to resume distributing federal grants and loans, at least $19 billion in Environmental Protection Agency funding to thousands of state and local governments and nonprofits remained on hold as of Feb. 14, said environmental and legal advocates who are tracking the issue.

EPA Administrator Lee Zeldin has vowed to seek return of an additional $20 billion the agency invested last year in the Greenhouse Gas Reduction Fund program, calling for a Department of Justice investigation into what he characterized as a “scheme… purposefully designed to obligate all of the money in a rush job with reduced oversight.”

Environmental advocates said Zeldin was unfairly smearing the Greenhouse Gas Reduction Fund, or “green bank,” program, on which EPA worked for more than a year with the Treasury Department to design a standard financial agent arrangement—the kind the government has used many times before to collect and distribute funds.

Critics believe the Trump administration, thwarted last week in its effort to get an appeals court to reinstate its sweeping government-wide freeze on federal funding, is resorting to a new tactic—labeling individual programs as nefarious or fraudulent. Although that approach has met with some success—a federal judge last week allowed the Federal Emergency Management Agency to freeze $80 million in funding from a migrant shelter program in New York—legal experts said courts will be looking for specifics and evidence, not broad assertions that programs are improper.

“They cannot challenge an entire program based on charges of fraud and waste,” said Jillian Blanchard, a vice president of the nonprofit Lawyers for Good Government. “If they had actual concerns about fraud or waste, they would need to follow clear procedures and protocols in the regulations, going grant by grant to address this, but that’s not what’s happening here. They are challenging entire programs whole cloth without evidence.

“The executive does not have the authority to change policies simply because they don’t like them,” Blanchard said at a virtual briefing for reporters on Friday. “Congress makes the law, not the president and certainly not Elon Musk,” she said, referring to the billionaire donor whom Trump has deputized to cut government spending.

Feeling the freeze

Across the country, the spending freeze has thrown into chaos the environmental, resilience and community improvement programs that Congress authorized in the Inflation Reduction Act of 2022. Among the efforts on hold: clean drinking water, air monitoring, hurricane recovery and electric school buses.

“Real people on the ground are being hurt by the stop-start situation,” said Blanchard, whose group is working with the Natural Resources Defense Council on the cases of 230 grantees in 44 states.

Grantees are in a state of confusion because they have not heard directly from EPA, she said.

Michelle Roos, executive director of the Environmental Protection Network, a coalition of former EPA employees that is also working with Lawyers for Good Government, said many grantees are not sure what is happening because the agency’s employees have been forbidden to talk to people outside of the agency.

Several grantees reached by Inside Climate News said that they were not talking to the press, or did not want to say whether or not they could access their funding.

MDC, a nonprofit in Durham, North Carolina, along with the Hispanic Federation, was supposed to receive a $3 million environmental justice community change grant for disaster recovery and resilience programs in Latino areas of eastern North Carolina.

“We were thrilled to receive federal support to do this work, but unfortunately, like many others, we have experienced an interruption in accessing this funding,” said Clarissa Goodlett, MDC’s director of communications.

Many neighborhoods, especially those that are home to low-income, Black and Latino residents, are still rebuilding from hurricanes that hit in 2016 and 2018.

During the storms, rural counties in eastern North Carolina did not provide real-time emergency alerts or evacuation orders in Spanish, according to Enlace Latino NC, a Spanish-language digital news outlet.

The MDC grant would help Latinos connect with local governments to ensure their communities are included in discussions and decisions about the impact of climate disasters.

“We are investigating and pursuing whatever options and channels are available to us to ensure we can follow through on our commitment to communities in eastern North Carolina,” Goodlett said.

Dorothy Darr, executive director of the Southwest Renewal Foundation in High Point, near Greensboro, North Carolina, said she doesn’t know if the group’s $18.4 million grant is frozen. Southwest Renewal is teaming up with eight partners to support not only environmental projects—tree planting, water testing and building an urban greenway—but also workforce training and infrastructure improvements. These include upgrades to old, leaking sewer lines and inefficient HVAC systems and a new energy-efficient “cool” roof at a Guilford County school.

The money would also pay for nine new public electric vehicle charging stations, anti-littering campaigns and other improvements in historically Black and low-income neighborhoods in the southwest part of the city.

Darr said the foundation only recently received an account number from the EPA, and she plans to try to access the funds Monday.

“The grant title”—Environmental and Climate Justice Community Change Grants—”has the words ‘environment’ and ‘justice’ in it,” Darr said. “If you’re just slashing programs based on words, then we’re a sitting duck.”

In Texas, the nonprofit group Downwiders at Risk received word in a Feb. 4 letter that it had received a $500,000 EPA environmental justice “collaborative problem-solving” grant it had applied for last year. The money was to be used to install community air monitors in neighborhoods near Dallas. But the notification didn’t provide instructions on how to access the money, and no followup ever came.

Executive Director Caleb Roberts called around his local EPA office, but no one could give answers.

“People are still unsure. Our project officer at the EPA has no idea. I’ve emailed people higher up,” Roberts said. “They have no idea if things are funded or not. They are just as in the dark as we are.”

Downwinders’ award letter said they had 21 days to pull their first block of funding. If no instructions to access the money arrive before then, Robert worries they may lose it.

The city of New Haven, Connecticut, only received word on Jan. 21—the day after Trump’s inauguration—that it and its local nonprofit partners had received a $20 million environmental justice community change grant, according to Steve Winter, who heads up the city’s Office of Climate and Sustainability. But he had never been able to access the funds; the online system originally said “unavailable for payment;” that changed on Feb. 10 to “suspended.”

The money was supposed to help fund whole-home energy efficiency retrofits in a city where one-quarter of the population lives in poverty and where energy costs have skyrocketed since the start of the Russia-Ukraine war, Winter said. Connecticut, like much of New England, relies heavily on heating oil in winter—not only the most expensive home heating fuel, but the most polluting. The grants also would have helped with asbestos and mold remediation in the homes, which are necessary before energy efficiency upgrades can be done.

Winter said the city has warned its partners that they now may need to lay off staff that they’ve hired for outreach for energy efficiency programs, and the future of a community geothermal project is at risk. Also up in the air: a local food rescue organization’s plans to increase staff and food storage capacity.

“People might say, oh this environmental justice grant is some frivolous thing, but it’s about helping people with quality affordable housing, with lowering their energy bills, alleviating hunger in the community, providing affordable transportation options,” Winter said. “These are all trying to meet basic needs that also have an environmental impact.”

A “rush job” accusation

The Trump administration’s drive to root out “diversity, equity and inclusion,” or DEI programs, throughout the government has swept up environmental justice programs at EPA, even though the two are distinct policy initiatives similar only in that they often involve people of color. After taking office two weeks ago, the first employees that Zeldin announced he was eliminating from the agency were those in DEI and environmental justice programs.

“The previous Administration used DEI and Environmental Justice to advance ideological priorities, distributing billions of dollars to organizations in the name of climate equity,” Zeldin said in a statement. “This ends now. We will be good stewards of tax dollars and do everything in our power to deliver clean air, land, and water to every American, regardless of race, religion, background, and creed.”

Last week, as thousands more employees at EPA and other federal agencies were placed on administrative leave or accepted the deferred retirement offer, Zeldin escalated his critiques on environmental justice and climate programs.

In a video first posted on X, Musk’s social media platform, on Wednesday night,

Zeldin called out $20 billion for the Greenhouse Gas Reduction Fund that he said had been “parked at an outside financial institution,” suggesting that the money was given away in a “rush job” in the waning days of the Biden administration. In fact, the money in question was awarded to eight recipients in August, well before the election. The program’s defenders say it went through a rigorous selection process that began more than a year before the awards were announced.

The $20 billion falls under two programs within the EPA’s Greenhouse Gas Reduction Fund and is intended to support nonprofits and financial institutions to serve as green banks. The eight recipients, which received between $400,000 and $7 billion, are supposed to use that money to finance projects by businesses and nonprofits around the country that would cut climate pollution. Much of the money is dedicated to low-income communities, where it is often harder for businesses to raise private financing.

The recipients have already begun using the funding to support businesses, including $250 million for an electric truck financing program beginning at the ports of Los Angeles and Long Beach, $31.8 million in financing for a solar project for the University of Arkansas System and $10.8 million for solar projects on Tribal lands in Oregon and Idaho.

Electric truck

An electric truck is delivered to the Port of Los Angeles in San Pedro, Calif. on Dec. 17, 2021.

Credit: Brittany Murray/MediaNews Group/Long Beach Press-Telegram via Getty Images

An electric truck is delivered to the Port of Los Angeles in San Pedro, Calif. on Dec. 17, 2021. Credit: Brittany Murray/MediaNews Group/Long Beach Press-Telegram via Getty Images

Unlike most of the grant recipients under the IRA, who draw down their money over time as work is completed, the green banks already received their money. Zealan Hoover, who administered IRA programs at EPA during the Biden administration, said the money was placed into bank accounts at Citibank under terms of financial agreements worked out with the Treasury Department.

Although EPA had never used such an outside financial agent before, the Treasury Department had made such agreements with outside institutions many times in the past to distribute or collect money. The system used for electronic federal tax payments, for expanding access to retirement savings and for getting money to assist businesses during the COVID-19 pandemic are just a few of the examples he cited.

“What is underway is not a good-faith effort to fight fraud,” Hoover said. “If it was, federal agencies would not be firing thousands of employees who are hired to conduct robust management and oversight of these programs.”

Zeldin said he was calling for termination of the financial agent agreement for the green bank program, and for the immediate return of the entire fund balance to the United States Treasury. He also said he was referring the issue to the EPA’s Office of the Inspector General and Congress and would “work with the U.S. Department of Justice.” In fact, EPA’s inspector general was dismissed in the early days of the Trump administration along with those at 16 other agencies. EPA’s press office said the agency currently has an acting inspector general but when asked, did not respond with that person’s name. EPA did not answer further questions on the financial agent program, referring only to Zeldin’s video post.

“The American public deserves a more transparent and accountable government than what transpired the past four years,” Zeldin said in the post. “We take our obligations under the law as seriously as it gets. I’ve directed my team to find your ‘gold bars’ and they found them. Now we will get them back inside of control of government as we pursue next steps.”

Citibank declined to comment. Each of the eight recipients of the green bank funds either declined to comment or did not reply to requests for comment.

“Hard for courts to catch up”

What happens next for the grant recipients is not entirely clear. Courts have issued temporary restraining orders to halt the funding freeze until the issue can be argued on its merits. In a five-page order issued Feb. 10, U.S. District Judge John McConnell Jr. of Rhode Island said that it was clear that the administration had in some instances continued “to improperly freeze federal funds.”

McConnell ordered the administration to “immediately end any funding pause,” but EPA and other agencies that are administering IRA climate programs, like the Department of Energy, are continuing to hold back funds.

“We’re talking about funding for families to make upgrades that help them save on their monthly energy bill, funding for people to buy energy efficient appliances and to retrofit their home so that cold air stays out in the winter and hot air stays out in the summer,” said Sen. Patty Murray, D-Wash., the vice chair of the Senate Appropriations Committee, in a briefing with reporters on Thursday. “Those programs aren’t just important to tackling the climate crisis. They are saving our families money.”

“What is painfully clear is that Trump’s illegal funding freeze is causing chaos and confusion,” Murray said.

But Murray and other Democrats, who helped shepherd the IRA to passage in 2022 with no Republican votes, now have little power to force a showdown in a Congress controlled by Republicans. And although multiple studies have shown that most of the $379 billion Congress devoted to funding the clean energy transition in that legislation has flowed to Republican districts, there has been little sign so far that GOP leaders are inclined to clash with the administration. In a few instances, Republicans have sought protection for individual programs that affect their own states.

Blanchard and other legal experts said the courts will have the final say on whether the Trump administration can continue to selectively freeze federal funds. But the decisions may not come soon enough for the programs that are relying on the money they were promised.

“The problem is, as a practical matter, it’s very hard for the courts to catch up,” said Richard Lazarus, an environmental law professor at Harvard Law School. “And the impact on these communities is immediate. The place is closed down, the services aren’t provided for these communities. So the impact can be immediate and devastating, and the practical remedy may be illusory.”

Lazarus was one of the legal scholars writing about environmental justice in the 1990s, before President Bill Clinton signed the first executive order to address communities that suffer a disproportionate burden of pollution. He said that although these communities now “have a fight on their hands,” it is not a new situation for them.

“It’s not as though the government turning against their hardship is something the EJ communities don’t know,” he said. “They don’t welcome it, but they know what this is. It’s how they’ve lived their lives for decades. They fought, and they’ll continue to fight. And that’ll be fighting in cases and lawsuits, and it’ll be fighting politically.”

This story originally appeared on Inside Climate News.

Photo of Inside Climate News

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moon-rocks-reveal-hidden-lunar-history

Moon rocks reveal hidden lunar history

That mission, and the 2020 Chang’e-5 robotic mission before it, are the first to return lunar rocks to Earth since the 1970s. Together they are building on what scientists learned from Apollo-era missions, helping to unravel mysteries about how the Moon was formed and why it looks the way it does today, and providing clues about our solar system’s history.

But big puzzles remain, such as why the far side of the Moon—the half that always faces away from Earth—is so radically different from the near side. And what is behind the surprising finding that lunar volcanoes may have been active much more recently than previously thought? “The more we look at the Moon, the more we’ve discovered—and the more we realize how little we know,” says Clive R. Neal, a geologist at the University of Notre Dame who specializes in lunar exploration.

China’s 2024 Chang’e-6 robotic lander mission brought more than four pounds of rocks from the far side of the Moon back to Earth. Credit: CNSA / CAS

With NASA planning to send astronauts back to the Moon’s surface in 2027 for the first time since 1972, geologists are excited about what rocks they might find there and the scientific secrets those samples could reveal—along with what resources could be mined for a future Moon base, or for renewable energy back home on Earth.

Origin story

The samples brought home from the Moon in the 1970s by the Apollo missions and the Soviet Union’s Luna missions cleared up quite a lot about the Moon’s history. Because the lunar samples shared strong similarities with Earth rocks, this added weight to the idea that the Moon was formed when a Mars-sized object called Theia collided with the proto-Earth roughly 4.5 billion years ago.

Debris from the impact was thrown into orbit around Earth and eventually coalesced into the Moon. In its early days, the Moon was entirely molten. As the magma ocean cooled over hundreds of millions of years, the Moon formed a crust and a mantle below. Giant pools of lava filled impact craters and settled into the lunar lowlands, or maria (Latin for “seas”), while highlands and volcanic domes loomed above them. Eventually, the volcanism died out.

Without plate tectonics or weather, the only things left to alter the Moon’s cold, dead surface were meteorites. A lot of the Apollo-era samples were found to have formed from the heat and pressure of impacts around 3.9 billion years ago, suggesting that they were the result of a short period of intense pummeling by space rocks called the Late Heavy Bombardment.

But research since the 1970s has refined or changed this picture. Higher-resolution orbital images have revealed plenty of large impact craters that seem far older than 3.9 billion years, for example. And meteorites found on Earth, thought to have been ejected from various areas of the Moon during big impacts, have been found to span a huge range of ages.

All this work together suggests that the asteroid bombardment didn’t happen in one dramatic spike but rather over an extended period lasting from perhaps 4.2 billion to 3.4 billion years ago. In this scenario, the Apollo samples dated to 3.9 billion years likely all came from just one huge impact that spewed rock over a very wide area that happened to include the Apollo-era landing sites.

The Moon: Dead or alive

Greater mysteries surround volcanism on the Moon. “The canonical thing I learned in school was that the Moon had been geologically dead for billions of years,” says Samuel Lawrence, a planetary scientist at NASA’s Johnson Space Center in Houston.

The long-held theory was that a small body like the Moon should have lost its heat to space relatively quickly—and a frigid, extinguished Moon shouldn’t have widespread volcanic activity. Apollo-era samples suggested that most of this volcanism stopped 3 billion years ago or earlier, supporting the theory. But research over the past two decades has overturned that view.

This geologic map of the Moon released in 2022 by China is the most detailed global map yet published and includes information gleaned from the 2020 Chang’e-5 mission. Credit: J. JI ET AL / THE 1:2,500,000-SCALE GEOLOGIC MAP OF THE GLOBAL MOON 2022.

In 2014, Lawrence and colleagues posited that some patches of irregular terrain in the middle of the dark plains, or mare, spotted by the NASA Lunar Reconnaissance Orbiter were the result of volcanism that kept going until less than 100 million years ago. “That is totally, totally surprising,” says cosmochemist Qing-Zhu Yin of the University of California, Davis.

The latest sample-return missions added more concrete evidence for recent volcanism. In 2020, the Chang’e-5 robotic mission landed in Oceanus Procellarum (the Ocean of Storms) — a spot picked in part because it looked geologically young given how few craters had accumulated there. Sure enough, the volcanic rocks brought home by that mission were found to be 2 billion years old, the youngest ever retrieved from the Moon. “That was big news,” says planetary geoscientist Jim Head of Brown University, who worked on NASA’s Apollo missions.

On top of this, when researchers trawled through thousands of glass beads found in the Chang’e-5 soil samples, most of which are thought to have been created by impacts, they identified three that were volcanic—and only 120 million years old. This finding was published just last year and still needs to be verified, but if such recent dates hold up, they suggest that the Moon might still be capable of producing deep magma even today, Yin says.

All this indicates that the Moon might not have cooled as fast as everyone thought it did. It’s also possible that some of the younger volcanism could have been powered by radioactive elements underground, which can generate enough heat to form magma and are known to be prevalent in certain patches of the Moon. This could explain the 120-million-year-old volcanic glass beads, for example. But not all the early volcanism can be explained this way: The Chang’e-5 volcanic rocks, along with some 2.8-billion-year-old volcanic rock brought back from the far side by Chang’e-6, came from source rocks not enriched with these elements.

“It throws up more questions than it answers,” Neal says. “It’s job security for people like me — we now have new questions to address.”

Lunar exploration ahead

Untangling these mysteries is challenging with so much of the Moon unexplored: While about 850 pounds of Moon rock and soil have now been brought back to Earth, it has all been from just a handful of sites.

Chang’e-6 expanded this picture by bringing back the first samples from the Moon’s far side, taken from the South Pole-Aitken Basin, the satellite’s largest, deepest and oldest impact crater. Researchers are keen to use these samples to start determining why the far side is so dramatically different from the near side. The questions that remain unanswered are why the far side has a thicker crust and is nearly devoid of mare from ancient lava oceans when compared with the near side.

NASA’s Artemis III mission, planned for 2027 (though that could change), aims to break more new ground by landing astronauts near the Moon’s south pole—in a spot that is more representative of the Moon’s typical geology than the Apollo sites—and bring home a bonanza of 150 to 180 pounds of samples.

This site should provide fresh geological insights, along with more information about lunar water. In 2018, scientists analyzing orbital mapping data confirmed that there is water ice at the poles—but in what form no one yet knows. “Is it frost on the surface? Is it discrete patches underneath the surface? Is it absorbed onto mineral grains? Is it baked into the regolith like cement?” says NASA’s Juliane Gross, who is helping to develop the plans for lunar sample collection and curation for the Artemis science team. “We don’t know.”

What the Artemis astronauts find could inform ongoing projects spearheaded by China and the United States to establish permanent bases on the Moon, which could benefit from the south pole’s water. “That’s stuff you can breathe, that’s stuff you can drink, it’s rocket fuel,” Lawrence says.

Lunar quarry

In addition to water ice, other potentially mineable resources on the Moon have garnered attention, particularly helium-3. This stable isotope of helium is far more plentiful on the Moon than on Earth and could be an ideal fuel for nuclear fusion (if physicists can get that process to work). Commercial enterprises seeking to mine the Moon have popped up, including Seattle-based Interlune, which plans to bring helium-3 back to Earth in the 2030s, followed by other resources such as rare earth elements needed for technologies like batteries. But when lunar mining will be a reality—considering the logistics, the economics and the legal concerns—is an open question, Lawrence says.

While some people find the idea of mining the pristine Moon distasteful, there could be side benefits for mining on Earth, Neal says. With polar temperatures around -230° C (-380° F), lunar mining would have to be done without fluids. Developing the technologies needed for fluid-free mining could mitigate environmental concerns about wastewater and tailing fluids from mining on Earth. “Just think how you could revolutionize mining on this planet,” he says.

But first, researchers need to simply find out more about the Moon, its history, its geology and the possibility of extracting resources—and that requires up-close exploration, which is sure to bring more surprises. “Once you’re on the ground, you’re like, oh … what’s this?” Gross says. She’s hoping the astronauts can bring home a large haul. “The more they return, the more we can do.”

This article originally appeared in Knowable Magazine, a nonprofit publication dedicated to making scientific knowledge accessible to all. Sign up for Knowable Magazine’s newsletter.

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AI used to design a multi-step enzyme that can digest some plastics

And it worked. Repeating the same process with an added PLACER screening step boosted the number of enzymes with catalytic activity by over three-fold.

Unfortunately, all of these enzymes stalled after a single reaction. It turns out they were much better at cleaving the ester, but they left one part of it chemically bonded to the enzyme. In other words, the enzymes acted like part of the reaction, not a catalyst. So the researchers started using PLACER to screen for structures that could adopt a key intermediate state of the reaction. This produced a much higher rate of reactive enzymes (18 percent of them cleaved the ester bond), and two—named “super” and “win”—could actually cycle through multiple rounds of reactions. The team had finally made an enzyme.

By adding additional rounds alternating between structure suggestions using RFDiffusion and screening using PLACER, the team saw the frequency of functional enzymes increase and eventually designed one that had an activity similar to some produced by actual living things. They also showed they could use the same process to design an esterase capable of digesting the bonds in PET, a common plastic.

If that sounds like a lot of work, it clearly was—designing enzymes, especially ones where we know of similar enzymes in living things, will remain a serious challenge. But at least much of it can be done on computers rather than requiring someone to order up the DNA that encodes the enzyme, getting bacteria to make it, and screening for activity. And despite the process involving references to known enzymes, the designed ones didn’t share a lot of sequences in common with them. That suggests there should be added flexibility if we want to design one that will react with esters that living things have never come across.

I’m curious about what might happen if we design an enzyme that is essential for survival, put it in bacteria, and then allow it to evolve for a while. I suspect life could find ways of improving on even our best designs.

Science, 2024. DOI: 10.1126/science.adu2454  (About DOIs).

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from-900-miles-away,-the-us-government-recorded-audio-of-the-titan-sub-implosion

From 900 miles away, the US government recorded audio of the Titan sub implosion

An image showing the audio file of the Titan implosion.

The waveform of the recording.

From SOSUS to wind farms

Back in the 1960s, 70s, and 80s, this kind of sonic technology was deeply important to the military, which used the Sound Surveillance System (SOSUS) to track things like Soviet submarine movements. (Think of Hunt for Red October spy games here.) Using underwater beamforming and triangulation, the system could identify submarines many hundreds or even thousands of miles away. The SOSUS mission was declassified in 1991.

Today, high-tech sonic buoys, gliders, tags, and towed arrays are also used widely in non-military research. The National Oceanic and Atmospheric Administration (NOAA), in particular, runs a major system of oceanic sound acquisition devices that do everything from tracking animal migration patterns to identifying right whale calving season to monitoring offshore wind turbines and their effects on marine life.

But NOAA also uses its network of devices to monitor non-animal noise—including earthquakes, boats, and oil-drilling seismic surveys.

A photo of the Titan's remains on the sea floor.

What’s left of the Titan, scattered across the ocean floor.

In June 2023, these devices picked up an audible anomaly located at the general time and place of the Titan implosion. The recording was turned over to the investigation board and has now been cleared for public release.

The Titan is still the object of both investigations and lawsuits; critics have long argued that the submersible was not completely safe due to its building technique (carbon fiber versus the traditional titanium) and its wireless and touchscreen-based control systems (including a Logitech game controller).

“At some point, safety just is pure waste,” Rush once told a journalist. Unfortunately, it can be hard to know exactly where that point is. But it is now possible to hear what it sounds like when you’re on the wrong side of it—and far below the surface of the ocean.

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Seafloor detector picks up record neutrino while under construction

On Wednesday, a team of researchers announced that they got extremely lucky. The team is building a detector on the floor of the Mediterranean Sea that can identify those rare occasions when a neutrino happens to interact with the seawater nearby. And while the detector was only 10 percent of the size it will be on completion, it managed to pick up the most energetic neutrino ever detected.

For context, the most powerful particle accelerator on Earth, the Large Hadron Collider, accelerates protons to an energy of 7 Tera-electronVolts (TeV). The neutrino that was detected had an energy of at least 60 Peta-electronVolts, possibly hitting 230 PeV. That also blew away the previous records, which were in the neighborhood of 10 PeV.

Attempts to trace back the neutrino to a source make it clear that it originated outside our galaxy, although there are a number of candidate sources in the more distant Universe.

Searching for neutrinos

Neutrinos, to the extent they’re famous, are famous for not wanting to interact with anything. They interact with regular matter so rarely that it’s estimated you’d need about a light-year of lead to completely block a bright source of them. Every one of us has tens of trillions of neutrinos passing through us every second, but fewer than five of them actually interact with the matter in our bodies in our entire lifetimes.

The only reason we’re able to detect them is that they’re produced in prodigious amounts by nuclear reactions, like the fusion happening in the Sun or a nuclear power plant. We also stack the deck by making sure our detectors have a lot of matter available for the neutrinos to interact with.

One of the more successful implementations of the “lots of matter” approach is the IceCube detector in Antarctica. It relies on the fact that neutrinos arriving from space will create lots of particles and light when they slam into the Antarctic ice. So a team drilled into the ice and placed strings of detectors to pick up the light, allowing the arrival of neutrinos to be reconstructed.

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ULA’s Vulcan rocket still doesn’t have the Space Force’s seal of approval

ULA crews at Cape Canaveral have already stacked the next Vulcan rocket on its mobile launch platform in anticipation of launching the USSF-106 mission. But with the Space Force’s Space Systems Command still withholding certification, there’s no confirmed launch date for USSF-106.

So ULA is pivoting to another customer on its launch manifest.

Amazon’s first group of production satellites for the company’s Kuiper Internet network is now first in line on ULA’s schedule. Amazon confirmed last month that it would ship Kuiper satellites to Cape Canaveral from its factory in Kirkland, Washington. Like ULA, Amazon has run into its own delays with manufacturing Kuiper satellites.

“These satellites, built to withstand the harsh conditions of space and the journey there, will be processed upon arrival to get them ready for launch,” Amazon posted on X. “These satellites will bring fast, reliable Internet to customers even in remote areas. Stay tuned for our first launch this year.”

Amazon and the Space Force take up nearly all of ULA’s launch backlog. Amazon has eight flights reserved on Atlas V rockets and 38 missions booked on the Vulcan launcher to deploy about half of its 3,232 satellites to compete with SpaceX’s Starlink network. Amazon also has launch contracts with Blue Origin, which is owned by Amazon founder Jeff Bezos, along with Arianespace and SpaceX.

The good news is that United Launch Alliance has an inventory of rockets awaiting an opportunity to fly. The company plans to finish manufacturing its remaining 15 Atlas V rockets within a few months, allowing the factory in Decatur, Alabama, to focus solely on producing Vulcan launch vehicles. ULA has all the major parts for two Vulcan rockets in storage at Cape Canaveral.

“We have a stockpile of rockets, which is kind of unusual,” Bruno said. “Normally, you build it, you fly it, you build another one… I would certainly want anyone who’s ready to go to space able to go to space.”

Space Force officials now aim to finish the certification of the Vulcan rocket in late February or early March. This would clear the path for launching the USSF-106 mission after the next Atlas V. Once the Kuiper launch gets off the ground, teams will bring the Vulcan rocket’s components back to the hangar to be stacked again.

The Space Force has not set a launch date for USSF-106, but the service says liftoff is targeted for sometime between the beginning of April and the end of June, nearly five years after ULA won its lucrative contract.

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22 states sue to block new NIH funding policy—court puts it on hold

Regardless of what else they might be doing, the indirect costs pay for various critical campus services, including at research hospitals. Suddenly having that amount slashed would create a major budgetary shortfall that will be hard to cover without shutting programs down.

The resulting damage to research campuses in their states was one of the harms cited by the states that joined the suit as part of their effort to establish standing. The other was the harm caused by the general slowdown in biomedical research that the policy will trigger, which the states argue will delay the availability of treatments for their citizens.

The states taking part include most of those that were won by Kamala Harris in 2024, as well as states that voted for Trump but currently have Democratic governors and attorneys general: Arizona, Michigan, Nevada, North Carolina, and Wisconsin. Notably, the suit only seeks relief from the altered NIH policy for institutions located in those states; they’re essentially leaving states controlled by Republicans to suffer the damages caused by the new policy.

Allegations and backup allegations

The states allege that the new NIH policy, by applying to all grants in progress, is equivalent to rewriting a contract. It cites an earlier legal decision that determined that “Once the [Notice of Award] is signed or money is drawn, the [Notice of Award] and the grant terms are binding on the grantee and the government.” Beyond that, the states argue the policy violates two separate pieces of legislation.

The first is the Administrative Procedures Act, which describes the processes that agencies need to follow when they formulate formal rules to translate legislation into implementations. Among other things, this prevents agencies from formulating rules that are “arbitrary and capricious.” It argues that, by including audits and negotiations in the process of setting them, the current individualized indirect rates are anything but.

By contrast, the states argue, there’s no significant foundation for the 15 percent indirect rate. “The Rate Change Notice is arbitrary and capricious in, among other ways, its failure to articulate the bases for the categorical rate cap of 15 percent,” the suit alleges, “its failure to consider the grant recipients’ reliance on their negotiated rates, and its disregard for the factual findings that formed the bases for the currently operative negotiated indirect cost rates.”

22 states sue to block new NIH funding policy—court puts it on hold Read More »

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After Trump killed a report on nature, researchers push ahead with release

But one word in the federal register notice describing key principles of the nature report—”inclusive”—may have triggered Trump’s decision to end it. Christopher Schell, a lead author of a chapter called “Nature and Equity in the US,” told The Times that his chapter’s focus on environmental justice may have made the project an easy target for Trump.

On day one of his administration, Trump issued executive orders rescinding Biden-era priorities and ending several environmental justice and equity initiatives in government. According to an analysis from two experts at Harvard’s energy and environmental law program, Carrie Jenks and Sara Dewey, Trump claimed, “without explanation,” that the Biden initiatives violate “longstanding Federal civil-rights laws” and “threaten the safety of American men, women, and children.”

Now “federal agencies no longer have a mandate, unless required under separate rules, to consider how their actions will disproportionately harm low-income communities, communities of color, and other vulnerable populations,” the Harvard researchers warned.

Trump contradictions in environmental orders

Grist reported on the scramble to salvage a wide range of Trump-purged climate data like the National Nature Assessment that could help protect vulnerable communities by remaining in the public sphere. That report noted that climate data access was similarly lost during Trump’s prior administration, when “as much as 20 percent of the EPA’s website became inaccessible to the public” and the government’s “use of the term ‘climate change’ decreased by more than a third.”

But even if some members of the public remain jaded from Trump’s prior administration, researchers working on the nature report told The Times that their biggest concern in moving forward with the report is that the general public views government studies as more authoritative than independent studies. The fear is that even if the report is eventually published, its impact could be watered down without the government’s involvement or endorsement.

After Trump killed a report on nature, researchers push ahead with release Read More »

return-of-the-california-condor

Return of the California Condor


North America’s largest bird disappeared from the wild in the late 1980s.

The spring morning is cool and bright in the Sierra de San Pedro Mártir National Park in Baja California, Mexico, as a bird takes to the skies. Its 9.8-foot wingspan casts a looming silhouette against the sunlight; the sound of its flight is like that of a light aircraft cutting through the wind. In this forest thick with trees up to 600 years old lives the southernmost population of the California condor (Gymnogyps californianus), the only one outside the United States. Dozens of the scavenging birds have been reintroduced here, to live and breed once again in the wild.

Their return has been captained for more than 20 years by biologist Juan Vargas Velasco and his partner María Catalina Porras Peña, a couple who long ago moved away from the comforts of the city to endure extreme winters living in a tent or small trailer, to manage the lives of the 48 condors known to fly over Mexican territory. Together—she as coordinator of the California Condor Conservation Program, and he as field manager—they are the guardians of a project whose origins go back to condor recovery efforts that began in the 1980s in the United States, when populations were decimated, mainly from eating the meat of animals shot by hunters’ lead bullets.

In Mexico, the species disappeared even earlier, in the late 1930s. Its historic return—the first captive-bred condors were released into Mexican territory in 2002—is the result of close binational collaboration among zoos and other institutions in the United States and Mexico.

Beyond the number on the wing that identifies each individual, Porras Peña knows perfectly the history and behavior of the condors under her care. She recognizes them without needing binoculars and speaks of them as one would speak of the lives of friends.

She captures her knowledge in an Excel log: a database including information such as origin, ID tag, name, sex, age, date of birth, date of arrival, first release, and number in the Studbook (an international registry used to track the ancestry and offspring of each individual of a species through a unique number). Also noted is wildlife status, happily marked for most birds with a single word: “Free.” Names such as Galan, Nera, Pai Pai, La Querida, Celestino, and El Patriota stand out in the record.

The California condor, North America’s largest bird, has taken flight again. It’s a feat made possible by well-established collaborations between the US and Mexico, economic investment, the dedication of many people, and, above all, the scientific understanding of the species—from the decoding of its genome and knowledge of its diseases and reproductive habits to the use of technologies that can closely follow each individual bird.

But many challenges remain for the California condor, which 10,000 years ago dominated the skies over the Pacific coast of the Americas, from southern Canada to northern Mexico. Researchers need to assemble wild populations that are capable of breeding without human assistance, and with the confidence that more birds are hatched than die. It is a tough battle against extinction, waged day in and day out by teams in California, Arizona, and Utah in the United States, and Mexico City and Baja California in Mexico.

A shift in approach to conservation

The US California Condor Recovery Program, initiated in the 1970s, represented an enormous change in the strategy of species conservation. After unsuccessful habitat preservation attempts, and as a last-ditch attempt to try to save the scavenger bird from extinction, the United States Fish and Wildlife Service and the California Fish and Game Commission advocated for a decision as bold as it was controversial: to capture the last condors alive in the wild and commit to breeding them in captivity.

Some two dozen condors sacrificed their freedom in order to save their lineage. On April 19, 1987, the last condor was captured, marking a critical moment for the species: On that day, the California condor became officially extinct in the wild.

At the same time, a captive breeding program was launched, offering a ray of hope for a species that, beyond its own magnificence, plays an important role in the health of ecosystems—efficiently eliminating the remains of dead animals, thus preventing the proliferation of diseases and environmental pollution.

This is what is defined as a refaunation project, says Rodolfo Dirzo, a Stanford University biologist. It’s the flip side to the term defaunation that he and his colleagues coined in a 2014 article in Science to refer to the global extinction or significant losses of an animal species. Defaunation today is widespread: Although animal diversity is the highest in the planet’s history, modern vertebrate extinction rates are up to 100—even 1,000—times higher than in the past (excepting cataclysmic events causing mass extinctions, such as the meteorite that killed off the dinosaurs), Dirzo and colleagues explain in an article in the Annual Review of Ecology, Evolution, and Systematics.

Refaunation, Dirzo says, involves reintroducing individuals of a species into areas where they once lived but no longer do. He believes that both the term and the practice should be more common: “Just as we are very accustomed to the term and practice of reforestation, we should do the same with refaunation,” he says.

The map shows the regions where the California condor is currently found: northern Arizona, southern Utah, and California in the United States and Baja California in Mexico.

Credit: US Fish and Wildlife Service

The map shows the regions where the California condor is currently found: northern Arizona, southern Utah, and California in the United States and Baja California in Mexico. Credit: US Fish and Wildlife Service

The California Condor Recovery Program produced its first results in a short time. In 1988, just one year after the collection of the last wild condors, researchers at the San Diego Zoo announced the first captive birth of a California condor chick.

The technique of double or triple clutching followed, to greater success. Condors are monogamous and usually have a single brood every two years, explains Fernando Gual, who until October 2024 was director general of zoos and wildlife conservation in Mexico City. But if for some reason they lose an egg at the beginning of the breeding season—either because it breaks or falls out of the nest, which is usually on a cliff—the pair produces a second egg. If this one is also lost or damaged, they may lay a third. The researchers learned that if they removed the first egg and incubated it under carefully controlled conditions, the condor pair would lay a second egg, which was also removed for care, leaving a third egg for the pair to incubate and rear naturally.

This innovation was followed by the development of artificial incubation techniques to increase egg survival, as well as puppet rearing, using replicas of adult condors to feed and care for the chicks born in captivity. That way, the birds would not imprint on humans, reducing the difficulties the birds might face when integrating into the wild population.

Xewe (female) and Chocuyens (male) were the first condors to triumphantly return to the wild. The year was 1992, and the pair returned to freedom accompanied by a pair of Andean condors, natural inhabitants of the Andes Mountains in South America. Andean condors live from Venezuela to Tierra del Fuego and have a wingspan about 12 inches larger than that of California condors. Their mission here was to help to consolidate a social group and aid the birds in adapting to the habitat. The event took place at the Sespe Condor Sanctuary in the Los Padres National Forest in California. In a tiny, tentative way, the California condor had returned.

By the end of the 1990s, there were other breeding centers, such as the Los Angeles Zoo, the Oregon Zoo, the World Center for Birds of Prey in Boise, Idaho, the San Diego Zoo and the San Diego Zoo Safari Park. Then, in 1999, the first collaboration agreements were established between the United States and Mexico for the reintroduction of the California condor in the Sierra de San Pedro Mártir National Park. The number of existing California condors increased from just over two dozen in 1983 to more than 100 in 1995, some of which had been returned to the wild in the United States. By 2000, there were 172 condors and by 2011, 396.

By 2023, the global population of California condors reached 561 individuals, 344 of them living in the wild.

Genetics: Key ally in the reintroduction of the condor

In a laboratory at the San Diego Zoo in Escondido, California, a freezer full of carefully organized containers with colored labels is testament to the painstaking scientific work that supports the California Condor Recovery Program. Cynthia Steiner, a Venezuela-born biologist, explains that the DNA of every individual California condor is preserved there. This includes samples of birds who have died and those that are living, some 1,200 condors in total.

This California condor was hatched in 2004 as part of a breeding program and released in Arizona in 2006. In the 1980s, just 27 of the birds remained in existence. A recovery program has boosted the species’ numbers to more than 500, with several hundred living once more in the wild.

This California condor was hatched in 2004 as part of a breeding program and released in Arizona in 2006. In the 1980s, just 27 of the birds remained in existence. A recovery program has boosted the species’ numbers to more than 500, with several hundred living once more in the wild. Credit: Mark Newman via Getty Images

“If science wasn’t behind the reintroduction and recovery program it would have been very complicated, not only to understand what the most important hazards are that are affecting condor reproduction and survival, but also to do the management at the breeding centers and in the wild,” says Steiner, who is associate director of the Genetic Conservation Biology Laboratory at the Beckman Center for Conservation Research.

As she and colleagues outlined in an article in the Annual Review of Animal Biosciences, genomic information from animals at risk of extinction can shed light on many aspects of wildlife biology relevant to conservation. The DNA can reveal the demographic history of populations, identify genetic variants that affect the ability of populations to adapt to changing environments, demonstrate the effects of inbreeding and hybridization, and uncover the genetic basis of susceptibility to disease.

Genetic analysis of the California condor, for example, has led to the identification of inherited diseases such as chondrodystrophy—a disorder that causes abnormal skeletal development and often leads to the death of embryos before eggs can hatch. This finding served to identify carriers of the disease gene and thus avoid pairings that could produce affected offspring.

Genetic research has also made it possible to accurately sex these birds—males are indistinguishable from females to the naked eye—and to determine how individuals are related, in order to select breeding pairs that minimize the risk of inbreeding and ensure that the new condor population has as much genetic variability as possible.

Genetics has also allowed the program to determine the paternity of birds and has led to the discovery that the California condor is able to reproduce asexually using parthenogenesis, in which an embryo develops without fertilization by sperm. “It was an incredible surprise,” says Steiner, recalling how the team initially thought it was a laboratory error. They later confirmed that two chicks had, indeed, developed and hatched without any paternal genetic contribution, even though the females were housed with fertile males. It was the first record of this phenomenon in a bird species.

The complete decoding of the California condor genome, published in 2021, also revealed valuable information about the bird’s evolutionary history and prehistoric abundance. Millions of years ago, it was a species with an effective population of some 10,000 to 100,000 individuals. Its decline began about 40,000 years ago during the last ice age, and was later exacerbated by human activities. Despite this, Steiner says, the species retains a genetic variability similar to birds that are not endangered.

A problem with lead

Despite these great efforts and a renewed understanding of the species, threats to the condor remain.

In the 1980s, when efforts to monitor the last condors in the wild intensified, a revealing event took place: After 15 of them died, four were necropsied, and the cause of death of three of them was shown to be lead poisoning.

Although these Cathartiformes—from the Greek kathartes, meaning “those that clean”—are not usually prey for hunters, their scavenging nature makes them indirect victims of hunter bullets, which kill them not by their impact, but by their composition. Feeding on the flesh of dead animals, condors ingest fragments of lead ammunition that remain embedded in the carcasses.

Once inside the body, lead—which builds up over time—acts as a neurotoxin that affects the nervous, digestive, and reproductive systems. Among the most devastating effects is paralysis of the crop, the organ where condors store food before digesting it; this prevents them from feeding and causes starvation. Lead also interferes with the production of red blood cells, causing anemia and progressively weakening the bird, and damages the nervous system, causing convulsions, blindness, and death.

Efforts in the United States to mitigate the threat of lead to the condors have been extensive. Since the 1970s, several strategies have been implemented, such as provision of lead-free food for condors, campaigns to educate hunters about the impact of lead bullet use on wildlife, and programs showing conservation-area visitors how important birds are to the ecosystem. Government regulations have also played a role, like the Ridley-Tree Condor Preservation Act of 2007, which mandates the use of lead-free ammunition for big-game hunting within the condor’s range in California. However, these efforts have not been sufficient.

According to the 2023 State of the California Condor Population report, between 1992 and 2023, 137 condors died from lead poisoning—48 percent of the deaths with a known cause recorded in that period. The only population partially spared is in Baja California, where hunting is much less common. Only 7.7 percent of the deaths there are attributable to lead, according to Porras Peña’s records.

Will the condors become self-sufficient again?

The 1996 California Condor Recovery Plan notes that a self-sustaining condor population must be large enough to withstand variations in factors such as climate, food availability, and predators, and permit gene flow among the various clans or groups. The document establishes the objective of changing the status of the California condor from “endangered” to “threatened” under the US Endangered Species Act. To achieve this, there must be two reintroduced populations and one captive population, each with at least 150 individuals, including a minimum of 15 breeding pairs to ensure a positive growth rate—meaning that more condors are born than die.

Closeups of two California Condors.

Closeups of two California Condors. Credit: Mark Newman/Getty

Today, released California condor populations are distributed in several regions: Arizona and Utah are home to 90 birds in the wild, while California has 206. In Baja California, 48 condors fly in the wild. According to the calculations of Nacho Vilchis, associate director of recovery ecology at the San Diego Zoo Wildlife Alliance, it will take 10 to 15 years to have a clearer picture of how long it will take for the reintroduction program to be a complete success—to make condor populations self-sustaining.

So far, the reality is that all populations depend on human intervention to survive. It is a task carried out by biologists, technicians and conservationists, who face steep cliffs, rough terrain, and other obstacles to closely monitor the progress of the released birds and, above all, the development of chicks born in the wild.

Juan Vargas Velasco tells epic stories of how he has rappelled down steep cliffs in San Pedro Mártir National Park, facing attacks from the nest’s parent defenders in order to examine the chicks. “There is a perception that when you release a condor it is already a success, but for there to be real success, you have to monitor them constantly,” he says. “We follow them with GPS, with VHF telemetry, to make sure that the animals are adapting, that they find water and food. To release animals without monitoring is to leave them to their fate.”

The costs of managing the species in the field are not small. For example, the GPS transmitters needed to track the condors in their natural habitat cost $4,000, and subscription to the satellite system costs $80 per month per bird, Vilchis says. Other costs associated with the project, he adds, involve the construction of pre-release aviaries, laboratory analyses to monitor the birds’ health, and the provision of supplementary food in the initial stages of reintroduction. A key to ensuring the survival of the California condor is to secure funding for the species’ recovery program, notes the US Fish and Wildlife Service’s five-year report.

Each of the California Condor Recovery Program’s breeding and release sites in the United States operates as a nongovernmental organization that raises funds to finance the program. On the other side of the border, the program receives logistical support and equipment from US organizations, as well as funding from the philanthropic program “I’m Back BC Condor,” which helps to support the birds in the wild through private donations.

From Chapultepec to the San Pedro Mártir Mountain Range

A California condor hatchling peeks timidly through the protective mesh of the aviary at the Chapultepec Zoo, as one of its parents spreads its vast wings and flies over the enclosure. This space in the heart of Mexico City, one of the largest and most populated metropolises in the world, is part of the condor reintroduction effort in Mexico, a program that has been key to the recovery of the population in the Sierra de San Pedro Mártir in Baja California.

In 2002, the first condors released in Mexico came from the Los Angeles Zoo. In 2007, the Chapultepec Zoo received its first two male condors, with the goal of implementing an outreach and environmental education program while the team learned to handle the birds. After an assessment in 2014, it was confirmed that the zoo met the requirements for reproduction, permitting the arrival of two females. Breeding pairs were successfully formed, and, in 2016, the first hatchlings were born.

Today, Chapultepec Zoo not only houses a breeding center but also has built its own “frozen zoo,” formally known as the Genomic Resource Bank, which stores sperm, ovarian tissue, and DNA samples from nearly 100 wild animal species, many of them endangered. “More than a zoo, it’s a library,” says Blanca Valladares, head of the Conservation Genomics Laboratory within the Mexico City Conservation Centers.

Collaboration between Mexican institutions, such as the National Commission of Natural Protected Areas and the National Commission for the Knowledge and Use of Biodiversity, has been key in the development of the project in Baja California. What began in the United States has expanded across borders, creating a binational effort in which Mexico has taken an increasingly prominent role. This cooperative approach reflects the very nature of the species, which does not recognize borders in its historical habitat.

The hatchling in the aviary is preparing for its trip to Baja California. Over the next few months, it will be transported through air and over land, under the care of dozens of people, to the pre-release aviary in San Pedro Mártir, where it will spend a period of adaptation before being released. Baja California has been recognized by specialists as one of the best places for the recovery of the species, thanks to its pristine forest, a human population a tenth the size of California’s (4 million versus 40 million), and a low level of lead and diseases. Porras Peña says that the condor population in the region seems to have reached a point of stability: It remained stable for seven years without the need to release new condors bred in captivity.

Despite titanic efforts, strict protocols, and painstaking care at every stage of reintroduction, things don’t always go smoothly. In 2022, a puma attacked a pre-release aviary in the Sierra de San Pedro Mártir, where four condors, two from San Diego and two from Mexico City, were being prepared for release. The puma found a weak spot in the mesh and, with its claws, managed to reach the two condors from the United States. Porras Peña sadly describes the desperate efforts the team made to save the life of one of the injured birds, but in the end, it died. It was a devastating blow for the team, who saw years of work lost in an instant.

The incident is an ironic lesson from nature: While for decades condors were decimated as a consequence of human activity, today a natural predator snatches in seconds what has taken tireless efforts to recover—a brutal reminder that even if we rebuild a species by dint of science and sacrifice, nature will always have the last word.

Article translated by Debbie Ponchner.

This story originally appeared in Knowable Magazine.

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Knowable Magazine explores the real-world significance of scholarly work through a journalistic lens.

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Rocket Report: Another hiccup with SpaceX upper stage; Japan’s H3 starts strong


Vast’s schedule for deploying a mini-space station in low-Earth orbit was always ambitious.

A stack of 21 Starlink Internet satellites arrives in orbit Tuesday following launch on a Falcon 9 rocket. Credit: SpaceX

Welcome to Edition 7.30 of the Rocket Report! The US government relies on SpaceX for a lot of missions. These include launching national security satellites, putting astronauts on the Moon, and global broadband communications. But there are hurdles—technical and, increasingly, political—on the road ahead. To put it generously, Elon Musk, without whom much of what SpaceX does wouldn’t be possible, is one of the most divisive figures in American life today.

Now, a Democratic lawmaker in Congress has introduced a bill that would end federal contracts for special government employees (like Musk), citing conflict-of-interest concerns. The bill will go nowhere with Republicans in control of Congress, but it is enough to make me pause and think. When the Trump era passes and a new administration takes the White House, how will they view Musk? Will there be an appetite to reduce the government’s reliance on SpaceX? To answer this question, you must first ask if the government will even have a choice. What if, as is the case in many areas today, there’s no viable replacement for the services offered by SpaceX?

As always, we welcome reader submissions. If you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

Blue Origin flight focuses on lunar research. For the first time, Jeff Bezos’ Blue Origin space venture has put its New Shepard suborbital rocket ship through a couple of minutes’ worth of Moon-level gravity, GeekWire reports. The uncrewed mission, known as NS-29, sent 30 research payloads on a 10-minute trip from Blue Origin’s Launch Site One in West Texas. For this trip, the crew capsule was spun up to 11 revolutions per minute, as opposed to the typical half-revolution per minute. The resulting centrifugal force was equivalent to one-sixth of Earth’s gravity, which is what would be felt on the Moon.

Gee, that’s cool … The experiments aboard Blue Origin’s space capsule examined how to process lunar soil to extract resources and how to manufacture solar cells on the Moon for Blue Origin’s Blue Alchemist project. Another investigated how moondust gets electrically charged and levitated when exposed to ultraviolet light. These types of experiments in partial gravity can be done on parabolic airplane flights, but those only provide a few seconds of the right conditions to simulate the Moon’s gravity. (submitted by EllPeaTea)

Orbex announces two-launch deal with D-Orbit. UK-based rocket builder Orbex announced Monday that it has signed a two-launch deal with Italian in-orbit logistics provider D-Orbit, European Spaceflight reports. The deal includes capacity aboard two launches on Orbex’s Prime rocket over the next three years. D-Orbit aggregates small payloads on rideshare missions (primarily on SpaceX rockets so far) and has an orbital transfer vehicle for ferrying satellites to different altitudes after separation from a launch vehicle. Orbex’s Prime rocket is sized for the small satellite industry, and the company aims to debut it later this year.

Thanks to fresh funding? … Orbex has provided only sparse updates on its progress toward launching the Prime rocket. What we do know is that Orbex suspended plans to develop a spaceport in Scotland to focus its resources on the Prime rocket itself. Despite little evidence of any significant accomplishments, Orbex last month secured a $25 million investment from the UK government. The timing of the launch agreement with D-Orbit begs the question of whether the UK government’s backing helped seal the deal. As Andrew Parsonson of European Spaceflight writes: “Is this a clear indication of how important strong institutional backing is for the growth of privately developed launch systems in Europe?” (submitted by EllPeaTea)

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Falcon 9’s upper stage misfires again. The second stage of a SpaceX Falcon 9 rocket remained in orbit following a launch Saturday from Vandenberg Space Force Base, California. The rocket successfully deployed a new batch of Starlink Internet satellites but was supposed to reignite its engine for a braking maneuver to head for a destructive reentry over the Pacific Ocean. While airspace warning notices from the FAA showed a reentry zone over the eastern Pacific Ocean, publicly available US military tracking continued to show the upper stage in orbit this week. Sources also told Ars that SpaceX delayed two Falcon 9 launches this week by a day to allow time for engineers to evaluate the problem.

3 in 6 months … This is the third time since last July that the Falcon 9’s upper stage has encountered a problem in flight. On one occasion, the upper stage failed to reach its targeted orbit, leading to the destruction of 20 Starlink satellites. Then, an upper stage misfired during a deorbit burn after an otherwise successful launch in September, causing debris to fall outside of the pre-approved danger area. After both events, the FAA briefly grounded the Falcon 9 rocket while SpaceX conducted an investigation. This time, an FAA spokesperson said the agency won’t require an investigation. “All flight events occurred within the scope of SpaceX’s licensed activities,” the spokesperson told Ars.

Vast tests hardware for commercial space station. Vast Space has started testing a qualification model of its first commercial space station but has pushed back the launch of that station into 2026, Space News reports. In an announcement Thursday, Vast said it completed a proof test of the primary structure of a test version of its Haven-1 space station habitat at a facility in Mojave, California. During the testing, Vast pumped up the pressure inside the structure to 1.8 times its normal level and conducted a leak test. “On the first try we passed that critical test,” Max Haot, chief executive of Vast, told Space News.

Not this year … It’s encouraging to see Vast making tangible progress in developing its commercial space station. The privately held company is one of several seeking to develop a commercial outpost in low-Earth orbit to replace the International Space Station after its scheduled retirement in 2030. NASA is providing funding to two industrial teams led by Blue Origin and Voyager Space, which are working on different space station concepts. But so far, Vast’s work has been funded primarily through private capital. The launch of the Haven-1 outpost, which Vast previously said could happen this year, is now scheduled no earlier than May 2026. The spacecraft will launch in one piece on a Falcon 9 rocket, and the first astronaut crew to visit Haven-1 could launch a month later. Haven-1 is a pathfinder for a larger commercial station called Haven-2, which Vast intends to propose to NASA. (submitted by EllPeaTea)

H3 deploys Japanese navigation satellite. Japan successfully launched a flagship H3 rocket Sunday and put into orbit a Quasi-Zenith Satellite (QZS), aiming to improve the accuracy of global positioning data for various applications, Kyodo News reports. After separation from the H3 rocket, the Michibiki 6 satellite will climb into geostationary orbit, where it will supplement navigation signals from GPS satellites to provide more accurate positioning data to users in Japan and surrounding regions, particularly in mountainous terrain and amid high-rise buildings in large cities. The new satellite joins a network of four QZS spacecraft launched by Japan beginning in 2010. Two more Quasi-Zenith Satellites are under construction, and Japan’s government is expected to begin development of an additional four regional navigation satellites this year.

A good start … After a failed inaugural flight in 2023, Japan’s new H3 rocket has reeled off four consecutive successful launches in less than a year. This may not sound like a lot, but the H3 has achieved its first four successful flights faster than any other rocket since 2000. SpaceX’s Falcon 9 rocket completed its first four successful flights in a little more than two years, and United Launch Alliance’s Atlas V logged its fourth flight in a similar timeframe. More than 14 months elapsed between the first and fourth successful flight of Rocket Lab’s Electron rocket. The H3 is an expendable rocket with no roadmap to reusability, so its service life and commercial potential are likely limited. But the rocket is shaping up to provide reliable access to space for Japan’s space agency and military, while some of its peers in Europe and the United States struggle to ramp up to a steady launch cadence. (submitted by EllPeaTea)

Europe really doesn’t like relying on Elon Musk. Europe’s space industry has struggled to keep up with SpaceX for a decade. The writing was on the wall when SpaceX landed a Falcon 9 booster for the first time. Now, European officials are wary of becoming too reliant on SpaceX, and there’s broad agreement on the continent that Europe should have the capability to launch its own satellites. In this way, access to space is a strategic imperative for Europe. The problem is, Europe’s new Ariane 6 rocket is just not competitive with SpaceX’s Falcon 9, and there’s no concrete plan to counter SpaceX’s dominance.

So here’s another terrible idea … Airbus, Europe’s largest aerospace contractor with a 50 percent stake in the Ariane 6 program, has enlisted Goldman Sachs for advice on how to forge a new European space and satellite company to better compete with SpaceX. France-based Thales and the Italian company Leonardo are part of the talks, with Bank of America also advising on the initiative. The idea that some bankers from Goldman and Bank of America will go into the guts of some of Europe’s largest institutional space companies and emerge with a lean, competitive entity seems far-fetched, to put it mildly, Ars reports.

The FAA still has some bite. We’re now three weeks removed from the most recent test flight of SpaceX’s Starship rocket, which ended with the failure of the vehicle’s upper stage in the final moments of its launch sequence. The accident rained debris over the Atlantic Ocean and the Turks and Caicos Islands. Unsurprisingly, the Federal Aviation Administration grounded Starship and ordered an investigation into the accident on the day after the launch. This decision came three days before the inauguration of President Donald Trump, who counts Musk as one of his top allies. So far, the FAA hasn’t budged on its requirement for an investigation, an agency spokesperson told Ars.

Debris field … In the hours and days after the failed Starship launch, residents and tourists in the Turks and Caicos shared images of debris scattered across the islands and washing up onshore. The good news is there were no injuries or reports of significant damage from the wreckage, but the FAA confirmed one report of minor damage to a vehicle located in South Caicos. It’s rare for debris from US rockets to fall over land during a launch. This would typically only happen if a launch failed at certain parts of the flight. Before now, there has been no public record of any claims of third-party property damage in the era of commercial spaceflight.

DOD eager to reap the benefits of Starship. A Defense Department unit is examining how SpaceX’s Starship vehicle could be used to support a broader architecture of in-space refueling, Space News reports. A senior adviser at the Defense Innovation Unit (DIU) said SpaceX approached the agency about how Starship’s refueling architecture could be used by the wider space industry. The plan for Starship is to transfer cryogenic propellants between tankers, depots, and ships heading to the Moon, Mars, or other deep-space destinations.

Few details available … US military officials have expressed interest in orbital refueling to support in-space mobility, where ground controllers have the freedom to maneuver national security satellites between different orbits without worrying about running out of propellant. For several years, Space Force commanders and Pentagon officials have touted the importance of in-space mobility, or dynamic space operations, in a new era of orbital warfare. However, there are reports that the Space Force has considered zeroing out a budget line item for space mobility in its upcoming fiscal year 2026 budget request.

A small step toward a fully reusable European rocket. The French space agency CNES has issued a call for proposals to develop a reusable upper stage for a heavy-lift rocket, European Spaceflight reports. This project is named DEMESURE (DEMonstration Étage SUpérieur REutilisable / Reusable Upper Stage Demonstration), and it marks one of Europe’s first steps in developing a fully reusable rocket. That’s all good, but there’s a sense of tentativeness in this announcement. The current call for proposals will only cover the earliest phases of development, such as a requirements evaluation, cost estimation review, and a feasibility meeting. A future call will deal with the design and fabrication of a “reduced scale” upper stage, followed by a demonstration phase with a test flight, recovery, and reuse of the vehicle. CNES’s vision is to field a fully reusable rocket as a successor to the single-use Ariane 6.

Toes in the water … If you’re looking for reasons to be skeptical about Project DEMESURE, look no further than the Themis program, which aims to demonstrate the recovery and reuse of a booster stage akin to SpaceX’s Falcon 9. Themis originated in a partnership between CNES and European industry in 2019, then ESA took over the project in 2020. Five years later, the Themis demonstrator still hasn’t flown. After some initial low-altitude hops, Themis is supposed to launch on a high-altitude test flight and maneuver through the entire flight profile of a reusable booster, from liftoff to a vertical propulsive landing. As we’ve seen with SpaceX, recovering an orbital-class upper stage is a lot harder than landing the booster. An optimistic view of this announcement is that anything worth doing requires taking a first step, and that’s what CNES has done here. (submitted by EllPeaTea)

Next three launches

Feb. 7: Falcon 9 | Starlink 12-9 | Cape Canaveral Space Force Station, Florida | 18: 52 UTC

Feb. 8: Electron | IoT 4 You and Me | Māhia Peninsula, New Zealand | 20: 43 UTC

Feb. 10: Falcon 9 | Starlink 11-10 | Vandenberg Space Force Base, California | 00: 03 UTC

Photo of Stephen Clark

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

Rocket Report: Another hiccup with SpaceX upper stage; Japan’s H3 starts strong Read More »

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National Institutes of Health radically cuts support to universities

Grants paid by the federal government have two components. One covers the direct costs of performing the research, paying for salaries, equipment, and consumables like chemicals or enzymes. But the government also pays what are called indirect costs. These go to the universities and research institutes, covering the costs of providing and maintaining the lab space, heat and electricity, administrative and HR functions, and more.

These indirect costs are negotiated with each research institution and average close to 30 percent of the amount awarded for the research. Some institutions see indirect rates as high as half the value of the grant.

On Friday, the National Institutes of Health (NIH) announced that negotiated rates were ending. Every existing grant, and all those funded in the future, will see the indirect cost rate set to just 15 percent. With no warning and no time to adjust to the change in policy, this will prove catastrophic for the budget of nearly every biomedical research institution.

Cut in half or more

The new policy is described in a supplemental guidance document that modifies the 2024 grant policy statement. The document cites federal regulations that allow the NIH to use a different indirect cost rate from that negotiated with research institutions for “either a class of Federal awards or a single Federal award,” but it has to justify the decision. So, much of the document describes the indirect costs paid by charitable foundations, which tend to be much lower than the rate paid by the NIH.

The new rate of indirect cost reimbursement will be applied to any newly funded grants and retroactively to all existing grants starting with the issuance of this notice. The retroactive nature of this decision may end up being challenged due to the wording of the regulations cited earlier, which also state that “The Federal agency must include, in the notice of funding opportunity, the policies relating to indirect cost rate.” However, even going forward, this will likely severely curtail biomedical research in the US.

National Institutes of Health radically cuts support to universities Read More »