Ars Technica's Eric Berger writes: On the day before Christmas last year, a Falcon 9 rocket launched from California and put two spy satellites into low-Earth orbit for the armed forces of Germany, which are collectively called the Bundeswehr. Initially, the mission appeared successful. The German satellite manufacturer, OHB, declared that the two satellites were "safely in orbit." The addition of the two SARah satellites completed a next-generation constellation of three reconnaissance satellites, the company said. However, six months later, the two satellites have yet to become operational. According to the German publication Der Spiegel, the antennas on the satellites cannot be unfolded. Engineers with OHB have tried to resolve the issue by resetting the flight software, performing maneuvers to vibrate or shake the antennas loose, and more to no avail. As a result, last week, German lawmakers were informed that the two new satellites will probably not go into operation as planned.

The three-satellite constellation known as SARah -- the SAR is a reference to the synthetic aperture radar capability of the satellites -- was ordered in 2013 at a cost of $800 million. The first of the three satellites, SARah 1, launched in June 2022 on a Falcon 9 rocket. This satellite was built by Airbus in southern Germany, and it has since gone into operation without any problems. The two smaller satellites built by OHB, flying with passive synthetic aperture radar reflectors, were intended to complement the SARah 1 satellite, which carries an active phased-array radar antenna. [...] According to the Der Spiegel report, the Bundeswehr says the two SARah satellites built by OHB remain the property of the German company and would only be turned over to the military once they were operational. As a result, the military says OHB will be responsible for building two replacement satellites. Shockingly, the German publication says that its sources indicated OBH did not fully test the functionality and deployment of the satellite antennas on the ground. This could not be confirmed.

Canned water distilled from the air will be available to buy in the US later this year, in an effort to promote solar-powered "hydropanels" that provide an off-grid method of producing drinking water. New Scientist adds: The panels, created by Arizona-based firm Source, use solar energy to power fans, which draw water vapour from the air. A water-absorbing substance, known as a desiccant, traps the moisture, before solar energy from the panel releases the moisture into a collection area within the panel. The distilled water is then sent to a pressurised tank, where the pH is tweaked and minerals like calcium and magnesium are added.

Each panel can produce up to 3 litres of drinking water water a day, about the average daily intake for one person. The process works effectively even in hot, arid conditions such as Arizona, says Friesen. Source, which launched in 2014 as Zero Mass Water, already has hydropanels installed in 56 countries around the world. The panels can be installed as ground arrays, or on rooftops, linked into a building's drinking water pipes. Many sites serve off-grid communities without easy access to potable water, says Friesen. Most of the panels, which retail at almost $3000 apiece, are purchased by governments or development banks, although households can also install panels privately.

Starting July 1st, ships in Arctic waters are banned from using Heavy Fuel Oil (HFO), a relatively cheap tar-like oil that's widely used in shipping around the world, especially tankers. According to the BBC, it's the "dirtiest and most climate-damaging fuel for ships." Still, campaigners believe numerous loopholes will allow most ships to continue using the fuel until 2029, limiting the ban's immediate effectiveness. The BBC reports: Produced from the waste left over in oil refining, HFO poses a huge threat to the oceans in general but to the Arctic in particular. This sludge-like fuel is almost impossible to clean up if a spill occurs. In colder waters, experts say, the fuel does not break down but sinks in lumps that linger in sediments, threatening fragile ecosystems. In climate terms, this oil is seen as particularly dangerous, not just producing large amounts of planet-warming gas when burned, but also spewing out sooty particles called black carbon. [...] The oil was banned from use or transport in the Antarctic in 2011. Environmentalists have been pushing to expand that restriction to northern waters for years, finally persuading the countries that participate in the International Maritime Organisation (IMO) to enact a ban back in 2021. [...]

According to the regulations, ships that have a "protected fuel tank" will be exempt from the ban. Countries that border the Arctic will also be able to exempt their own ships from the ban in their own territorial waters. One of the major players in the region is Russia, which has over 800 ships operating in northern waters. They are not implementing the new IMO regulation. These waiver exemptions will last until 2029 -- their impact is likely to be significant, with the International Council on Clean Transportation estimating that about 74% of ships that use HFO will be able to continue to do so. Some observers believe that increased efforts to extract oil in the Arctic could see a rise in the amount of HFO in use in these waters, instead of a decrease.

The Los Angeles Times reports that "multiple projects seeking to remove carbon dioxide from the air have been launched across Los Angeles County: When completed, Project Monarch and its wastewater component, Pure Water Antelope Valley, will purify up to 4.5 million gallons of water each day and capture 25,000 tons of atmospheric CO2 each year. (The typical gasoline-powered automobile spews 4.6 tons of carbon each year, according to the Environmental Protection Agency).... But the Palmdale project isn't the only new carbon-capture development in L.A. County. On Friday, officials from CarbonCapture Inc. gathered in Long Beach to introduce the first commercial-scale U.S. direct air capture, or DAC, system designed for mass production. The unit, which resembles a shipping container, can remove more than 500 tons of atmospheric CO2 per year... The L.A.-based company also announced that it will mass-produce up to 4,000 of its DAC modules annually at a new facility in Mesa, Arizona. It joins similar efforts from L.A.-based Captura, which is working to remove CO2 from the upper ocean; L.A.-based Avnos, which produces water while capturing carbon; and L.A.-based Equatic, which is working to remove atmospheric CO2 using the ocean...

[Equatic's] San Pedro facility pumps seawater through a series of electric plates that separate the water into hydrogen and oxygen as well as acidic and alkaline streams of liquid. The alkaline, or base, stream is exposed to the atmosphere, where it mineralizes CO2 into carbonates that are then dissolved and discharged back into the ocean for permanent storage, operators say Additionally, the hydrogen produced by the process is carbon-negative, making it a source of renewable energy that can be used to fuel the CO2 removal process or sold to other users, said Edward Sanders, chief operating officer at Equatic.

Equatic announced this month that it will partner with a Canadian carbon removal project developer, Deep Sky, to build North America's first commercial-scale ocean-based CO2 removal plant in Quebec, following the success of its effort in Los Angeles as well as another facility in Singapore. While the San Pedro facility can capture about 40 tons of CO2 per year, the Quebec facility will capture about 100,000 tons per year, Sanders said.
Meanwhile, two new projects by direct air capture company Heirloom were announced this week in Louisiana. Those projects are "expected to remove hundreds of thousands of tons of carbon dioxide from the air per year," according to the Associated Press, "and store it deep underground... part of "a slew of carbon removal and storage projects that have been announced in Louisiana." Heirloom estimates that they will eventually remove 320,000 tons of carbon dioxide each year... The company uses limestone, a natural absorbent, to extract carbon dioxide from the air. Heirloom's technology reduces the time it takes to absorb carbon dioxide in nature from years to just three days, according to the company's press release. The carbon dioxide is then removed from the limestone material and stored permanently underground.
In May America's Energy department also announced $3.5 billion in funding for its carbon-capture program — four large-scale, regional direct air capture hubs "that each comprise a network of carbon dioxide removal projects..." The hubs will have the capacity to capture and then permanently store at least one million metric tons of CO2 from the atmosphere annually, either from a single unit or from multiple interconnected units.
And Shell Canada has a pair of carbon capture projects in Alberta it expects to have operational toward the end of 2028, according to the CBC: The Polaris project is designed to capture about 650,000 tonnes of carbon dioxide annually from the Scotford complex. That works out to approximately 40 per cent of Scotford's direct CO2 emissions from the refinery and 22 per cent of its emissions from the chemicals complex.

game of Asteroids An anonymous reader shared this report from The Hill: An asteroid the size of a football stadium threaded the needle between Earth and the moon Saturday morning — the second of two astronomical near misses in three days. Near miss, in this case, is a relative term: Saturday's asteroid, 2024 MK, came within 180,000 miles of Earth. On Thursday, meanwhile, asteroid 2011 UL21 flew within 4 million miles.

But the Saturday passage of 2024 MK — which scientists discovered only two weeks ago — coincides with a sobering reminder of threats from space. Sunday is Asteroid Day, the anniversary of the 1908 explosion of a rock from space above a Russian town — the sort of danger that, astronomers warn, is always lurking as the Earth hurtles through space... In 2013, for instance, an asteroid about 62 feet across that broke apart nearly 20 miles above Siberia released 30 times as much energy as the atomic bomb that hit Hiroshima. While most of the impact energy was absorbed by the atmosphere, the detonation triggered a shock wave that blew out windows and injured more than a thousand people.
The article points out that if Saturday's asteroid had hit earth, the impact would have "the equivalent impact energy in the hundreds of megaton approaching a gigaton," Peter Brown of Canada's Western University told the Canadian Broadcasting Service. (For comparison, most hydrogen bombs are in the 50-megaton range.) Brown said "It's the sort of thing that if it hit the east coast of the U.S., you would have catastrophic effects over most of the eastern seaboard. But it's not big enough to affect the whole world."

Meanwhile, the article adds that last Thursday's asteroid — "while it was comfortably far out in space" — was the size of Mt. Everest. "At 1.5 miles in diameter, that asteroid was about a quarter the size of the asteroid that struck the earth 65 million years ago, wiping out all dinosaurs that walked, as well as the majority of life on earth." But the risk of a collision like that "is very, very low." NASA has estimated that a civilization-ending event (like the collision of an asteroid the size of Thursday's with the Earth) should only happen every few million years. And such an impact from an asteroid half a mile in diameter or bigger will be almost impossible for a very long time, according to findings published last year in The Astronomical Journal.
NASA's catalog of large and dangerous objects like 2011 UL21 is now 95 percent complete, MIT Technology Review reported.

Commercial space efforts continue around the world, as the Chinese company Space Pioneer fired up a partially-fueled rocket engine Sunday for a short-duration test of its reusable rocket on the ground. But Space News reports that the test "ended in catastrophic failure and a dramatic explosion."

"Amateur footage captured by Gongyi citizens and posted on Chinese social media shows the nine-engine test stage igntiing and then, exceptionally, taking off." Hold-down clamps and other structures are typically used to securely keep stages in place. The stage is seen climbing into the sky before halting, apparently with its engines shutting off, and returning to Earth. The stage impacted the ground around 50 seconds after it took off, apparently with much of its kerosene-liquid oxygen propellant remaining, causing a large explosion.

The Tianlong-3 first stage would likely fire for a number of minutes on an orbital flight. Space Pioneer was conducting its test as a buildup to an orbital launch of the Tianlong-3, which is benchmarked against the SpaceX Falcon 9, in the coming months. The company announced earlier this month that it has secured $207 million in new funding.

Shanghai-based digital newspaper The Paper reported Henan officials as saying there were no casualties reported. Space Pioneer issued its own statement later, stating there was a structural failure at the connection between the rocket body and the test bench. The rocket's onboard computer automatically shut down the engines and the rocket fell 1.5 kilometers southwest. It reiterated earlier reports that no casualties were found. The company said the test produced 820 tons of thrust.
The article speculates on whether the event will delay the development of the rocket — or the planned launches for a Chinese megaconstellation of satellites. "Space Pioneer says it will conduct an analysis and restart testing with new hardware as soon as possible."

It transforms water into the fuel — one of the first fuel plants in the world to do so.

The Washington Post visits a facility in Corpus Christi, Texas using renewable energy to produce "green" hydrogen. The plant feeds water through machines that pull out its hydrogen atoms... [T]he hydrogen is chemically transformed into diesel for delivery trucks. This process could represent the biggest change in how fuel for planes, ships, trains and trucks is made since the first internal combustion engine fired up in the 19th century... Turning hydrogen into liquid fuel could help slash planet-warming pollution from heavy vehicles, cutting a key source of emissions that contribute to climate change. But to fulfill that promise, companies will have to build massive numbers of wind turbines and solar panels to power the energy-hungry process. Regulators will have to make sure hydrogen production doesn't siphon green energy that could go towards cleaning up other sources of global warming gases, such as homes or factories.

Although cars and light trucks are shifting to electric motors, other forms of transport will likely rely on some kind of liquid fuel for the foreseeable future. Batteries are too heavy for planes and too bulky for ships. Extended charging times could be an obstacle for long-haul trucks, and some rail lines may be too expensive to electrify. Together, these vehicles represent roughly half of emissions from transportation, the fourth-biggest source of greenhouse gases. To wean machines off oil, companies like Infinium, the owner of this plant, are starting to churn out hydrogen-based fuels that — in the best case — produce close to net zero emissions. They could also pave the way for a new technology, hydrogen fuel cells, to power planes, ships and trucks in the second half of this century. For now, these fuels are expensive and almost no one makes them, so the U.S. government, businesses and philanthropists including Bill Gates are investing billions of dollars to build up a hydrogen industry that could cut eventually some of the most stubborn, hard-to-remove carbon pollution.

Most scenarios for how the world could avoid the worst effects of climate change envision hydrogen cleaning up emissions in transportation, as well as in fertilizer production and steel and chemical refining. But if they're not made with dedicated renewable energy, hydrogen-based fuels could generate even more pollution than regular diesel, creating a wasteful boondoggle that sets the world back in the fight against climate change. Their potential comes down to the way plants like this produce them... Only about 40 percent of the power on the [Texas] electric grid is from renewables, with the rest coming from natural gas and coal, according to state data. That grid energy is what flows through the power line into the Infinium plant.
"One day, heavy transportation may shift to fuel cells that run on pure hydrogen and emit only water vapor from their tailpipes," the article points out. But to accommodate today's carbon-burning vehicles, Infinium produces "chemical copies of existing fuels made with crude oil" by combining captured carbon with green hydrogen.

"A truck running on diesel made from hydrogen using only renewable electricity would create 89 percent fewer greenhouse gas emissions over the course of its lifetime than a truck burning diesel made from petroleum, according to a 2022 analysis from the European nonprofit Transport & Environment."

Slashdot reader Required Snark shared this article from Ars Technica: Almost exactly two years ago, as it prepared for the next generation of human spaceflight, NASA chose a pair of private companies to design and develop new spacesuits. These were to be new spacesuits that would allow astronauts to both perform spacewalks outside the International Space Station as well as walk on the Moon as part of the Artemis program. Now, that plan appears to be in trouble, with one of the spacesuit providers — Collins Aerospace — expected to back out, Ars has learned. It's a blow for NASA, because the space agency really needs modern spacesuits.

NASA's Apollo-era suits have long been retired. The current suits used for spacewalks in low-Earth orbit are four decades old. "These new capabilities will allow us to continue on the International Space Station and allows us to do the Artemis program and continue on to Mars," said the director of Johnson Space Center, Vanessa Wyche, during a celebratory news conference in Houston two years ago. The two winning teams were led by Collins Aerospace and Axiom Space, respectively. They were eligible for task orders worth up to $3.5 billion — in essence NASA would rent the use of these suits for a couple of decades. Since then, NASA has designated Axiom to work primarily on a suit for the Moon and the Artemis Program, and Collins with developing a suit for operations in-orbit, such as space station servicing...

The agency has been experiencing periodic problems with the maintenance of the suits built decades ago, known as the Extravehicular Mobility Unit, which made its debut in the 1980s. NASA has acknowledged the suit has exceeded its planned design lifetime. Just this Monday, the agency had to halt a spacewalk after the airlock had been de-pressurized and the hatch opened due to a water leak in the service and cooling umbilical unit of Tracy Dyson's spacesuit. As a result of this problem, NASA will likely only be able to conduct a single spacewalk this summer, after initially planning three, to complete work outside the International Space Station.
Collins designed the original Apollo suits, according to the article. But a person familiar with the situation told Ars Technica that "Collins has admitted they have drastically underperformed and have overspent" on their work, "culminating in a request to be taken off the contract or renegotiate the scope and their budget."

Ironically, the company's top's post on their account on Twitter/X is still a repost of NASA's February announcement that they're "getting a nextx-generation spacesuit" developed by Collins Aerospace, and saying that the company "recently completed a key NASA design milestone aboard a commercial microgravity aircraft."

NASA's post said they needed the suit "In order to advance NASA's spacewalking capabilities in low Earth orbit and to support continued maintenance and operations at the Space Station."

The Wall Street Journal reports that a European initiative studying the feasibility data centers in space "has found that the project could be economically viable" — while reducing the data center's carbon footprint.

And they add that according to coordinator Thales Alenia Space, the project "could also generate a return on investment of several billion euros between now and 2050." The study — dubbed Ascend, short for Advanced Space Cloud for European Net zero emission and Data sovereignty — was funded by the European Union and sought to compare the environmental impacts of space-based and Earth-based data centers, the company said. Moving forward, the company plans to consolidate and optimize its results. Space data centers would be powered by solar energy outside the Earth's atmosphere, aiming to contribute to the European Union's goal of achieving carbon neutrality by 2050, the project coordinator said... Space data centers wouldn't require water to cool them, the company said.
The 16-month study came to a "very encouraging" conclusion, project manager Damien Dumestier told CNBC. With some caveats... The facilities that the study explored launching into space would orbit at an altitude of around 1,400 kilometers (869.9 miles) — about three times the altitude of the International Space Station. Dumestier explained that ASCEND would aim to deploy 13 space data center building blocks with a total capacity of 10 megawatts in 2036, in order to achieve the starting point for cloud service commercialization... The study found that, in order to significantly reduce CO2 emissions, a new type of launcher that is 10 times less emissive would need to be developed. ArianeGroup, one of the 12 companies participating in the study, is working to speed up the development of such reusable and eco-friendly launchers. The target is to have the first eco-launcher ready by 2035 and then to allow for 15 years of deployment in order to have the huge capacity required to make the project feasible, said Dumestier...

Michael Winterson, managing director of the European Data Centre Association, acknowledges that a space data center would benefit from increased efficiency from solar power without the interruption of weather patterns — but the center would require significant amounts of rocket fuel to keep it in orbit. Winterson estimates that even a small 1 megawatt center in low earth orbit would need around 280,000 kilograms of rocket fuel per year at a cost of around $140 million in 2030 — a calculation based on a significant decrease in launch costs, which has yet to take place. "There will be specialist services that will be suited to this idea, but it will in no way be a market replacement," said Winterson. "Applications that might be well served would be very specific, such as military/surveillance, broadcasting, telecommunications and financial trading services. All other services would not competitively run from space," he added in emailed comments.

[Merima Dzanic, head of strategy and operations at the Danish Data Center Industry Association] also signaled some skepticism around security risks, noting, "Space is being increasingly politicised and weaponized amongst the different countries. So obviously, there is a security implications on what type of data you send out there."
Its not the only study looking at the potential of orbital data centers, notes CNBC. "Microsoft, which has previously trialed the use of a subsea data center that was positioned 117 feet deep on the seafloor, is collaborating with companies such as Loft Orbital to explore the challenges in executing AI and computing in space."

The article also points out that the total global electricity consumption from data centers could exceed 1,000 terawatt-hours in 2026. "That's roughly equivalent to the electricity consumption of Japan, according to the International Energy Agency."

Lego teamed up with the European Space Agency to make Lego pieces from actual meteorite dust, writes Engadget.

"It's a proof of concept to show how astronauts could use moondust to build lunar structures." Consider the sheer amount of energy and money required to haul up building materials from Earth to the Moon. It would be a game changer to, instead, build everything from pre-existing lunar materials. There's a layer of rock and mineral deposits at the surface of the Moon, which is called lunar regolith...

However, there isn't too much lunar regolith here on Earth for folks to experiment with. ESA scientists made their own regolith by grinding up a really old meteorite. [4.5 billion years, according to Lego's site, discovered in Africa in 2000.] The dust from this meteorite was turned into a mixture that was used to 3D print the Lego pieces. Voila. Moon bricks. They click together just like regular Lego bricks, though they only come in one color (space gray obviously.)
"The result is amazing," says ESA Science Officer Aidan Cowley on the Lego site (though "the bricks may look a little rougher than usual. Importantly the clutch power still works, enabling us to play and test our designs.")

"Nobody has built a structure on the Moon," Cowley said in an ESA statement. "So it was great to have the flexibility to try out all kinds of designs and building techniques with our space bricks." And the bricks will also be "helping to inspire the next generation of space engineers," according to the ESA's announcement — since they'll be on display in select Lego stores in the U.S., Canada, the U.K., Spain, France, Germany, the Netherlands, and Australia through September 20th.

Researchers in South Africa have injected radioactive material into the horns of 20 rhinos to deter poaching, aiming to leverage existing radiation detectors at borders for early detection and interception of trafficked horns. The Associated Press reports: The research, which has included the participation of veterinarians and nuclear experts, begins with the animal being tranquilized before a hole is drilled into its horn and the nuclear material carefully inserted. This week, researchers at the University of the Witwatersrand's Radiation and Health Physics Unit in South Africa injected 20 live rhinos with these isotopes. They hope the process can be replicated to save other wild species vulnerable to poaching -- like elephants and pangolins. "We are doing this because it makes it significantly easier to intercept these horns as they are being trafficked over international borders, because there is a global network of radiation monitors that have been designed to prevent nuclear terrorism," said Professor James Larkin, who heads the project. "And we're piggybacking on the back of that."

According to figures by the International Union for Conservation of Nature, an international conservation body, the global rhino population stood at around 500,000 at the beginning of the 20th century. It now stands at around 27,000 due to continued demand for rhino horns on the black market. South Africa has the largest population of rhinos with an estimated 16,000, making it a hotspot with over 500 rhinos killed yearly. [...] While the idea has received support from some in the industry, the researchers have had to jump many ethical hurdles posed by critics of their methodology.

Pelham Jones, chairperson of the Private Rhino Owners Association, is among the critics of the proposed method and doubts that it would effectively deter poachers and traffickers. "(Poachers) have worked out other ways of moving rhino horn out of the country, out of the continent or off the continent, not through traditional border crossings," he said. "They bypass the border crossings because they know that is the area of the highest risk of confiscation or interception." Professor Nithaya Chetty, dean of the science faculty at Witwatersrand, said the dosage of the radioactivity is very low and its potential negative impact on the animal was tested extensively.

An anonymous reader shares a report: Bill Gates has defended the rapid rise in energy use caused by AI systems, arguing the technology would ultimately offset its heavy consumption of electricity. Speaking in London, Gates urged environmentalists and governments to "not go overboard" on concerns about the huge amounts of power required to run new generative AI systems, as Big Tech companies such as Microsoft race to invest tens of billions of dollars in vast new data centres.

Data centres will drive a rise in global electricity usage of between 2-6 per cent, the billionaire said. "The question is, will AI accelerate a more than 6 per cent reduction? And the answer is: certainly," said Gates, the Microsoft co-founder who has been a prolific investor in companies developing sustainable energy and carbon- reduction technologies. In May, Microsoft admitted that its greenhouse gas emissions had risen by almost a third since 2020, in large part due to the construction of data centres.

Gates, who left Microsoft's board in 2020 but remains an adviser to chief executive Satya Nadella, said tech companies would pay a "green premium" -- or higher price -- for clean energy as they seek new sources of power, which was helping to drive its development and deployment. "The tech companies are the people willing to pay a premium and to help bootstrap green energy capacity," he said at the Breakthrough Energy Summit in London on Thursday.

Nine astronauts aboard the International Space Station were forced to take shelter late Wednesday when a satellite broke up in low Earth orbit. This "debris-generating event" created "over 100 pieces of trackable [space junk]," according to U.S. space-tracking firm LeoLabs. Space.com reports: The Expedition 71 crew on the International Space Station (ISS) went to their three spacecraft, including Boeing Starliner, shortly after 9 p.m. EDT (0200 GMT), according to a brief NASA update on X, formerly known as Twitter. As the ISS follows a time zone identical to GMT, according to the European Space Agency, the astronauts were likely in their sleep period when the incident occurred. The procedure was a "precautionary measure", NASA officials added, stating that the crew only stayed in their spacecraft for about an hour before they were "cleared to exit their spacecraft, and the station resumed normal operations."

NASA did not specify which satellite was associated with the incident, but satellite monitoring and collision detection firm LeoLabs identified a "debris-generating event" that same evening. "Early indications are that a non-operational Russian spacecraft, Resurs-P1 [or] SATNO 39186, released a number of fragments," the company wrote on X. U.S. Space Command also reported the Resurs-P1 event, saying on X that over 100 pieces of trackable debris were generated. The military said it "observed no immediate threats and is continuing to conduct routine conjunction assessments." (A conjunction refers to a close approach of two objects in orbit to one another.)

The number of climate lawsuits filed against companies around the world is rising swiftly, a report has found, and a majority of cases that have concluded have been successful. From a report: About 230 climate-aligned lawsuits have been filed against corporations and trade associations since 2015, two-thirds of which have been initiated since 2020, according to the analysis published on Thursday by the Grantham Research Institute on Climate Change and the Environment. One of the most rapidly growing forms of litigation is over "climate-washing" -- when companies are accused of misrepresenting their progress towards environmental targets -- and the analysis found that 47 such cases were filed against companies and governments in 2023.

As climate communications are increasingly scrutinised, there has been arise in climate-washing litigation, often with positive outcomes for those bringing the cases. Of the 140 climate-washing cases reviewed between 2016 and 2023, 77 have officially concluded, 54 of which ended with a ruling in favour of the claimant. More than 30 cases in 2023 concerned the "polluter pays" principle, whereby companies are held accountable for climate damage caused by high greenhouse gas emissions. The authors also highlighted six "turning off the taps" cases, which challenge the flow of finance to areas which hinder climate goals.

Early analysis of the near-Earth asteroid Bennu has revealed unexpected evidence of magnesium-sodium phosphate, suggesting Bennu might have originated from a primitive ocean world. Space.com reports: On Earth, magnesium-sodium phosphate can be found in certain minerals and geological formations, as well as within living organisms where it is present in various biochemical processes and is a component of bone and teeth. According to a NASA press release, however, its presence on Bennu surprised the research team because it wasn't seen in the OSIRIS-REx probe's remote sensing data prior to sample collection. The team says its presence "hints that the asteroid could have splintered off from a long-gone, tiny, primitive ocean world." "The presence and state of phosphates, along with other elements and compounds on Bennu, suggest a watery past for the asteroid," said Lauretta. "Bennu potentially could have once been part of a wetter world. Although, this hypothesis requires further investigation."

The OSIRIS-REx spacecraft obtained a sample of Bennu's regolith on October 20, 2020 using its Touch-and-Go Sample Acquisition Mechanism (TAGSAM), which comprises a specialized sampler head situated on an articulated arm. Bennu is a small B-type asteroid, which are relatively uncommon carbonaceous asteroids. "[Bennu] was selected as the mission target in part because telescopic observations indicated a primitive, carbonaceous composition and water-bearing minerals," stated the team in their paper. [...] Further analysis on the samples revealed the prevailing component of the regolith sample is magnesium-bearing phyllosilicates, primarily serpentine and smectite -- types of rock typically found at mid-ocean ridges on Earth. A comparison of these serpentinites with their terrestrial counterparts provides possible insights into Bennu's geological past. "Offering clues about the aqueous environment in which they originated," wrote the team.

While Bennu's surface may have been altered by water over time, it still preserves some of the ancient characteristics scientists believe were present during the early solar system's days. Bennu's surface materials still contain some original features from the cloud of gas and dust from which our solar system's planets formed -- known as the protoplanetary disk. The team's study also confirmed the asteroid is rich in carbon, nitrogen and some organic compounds -- all of which, in addition to the magnesium phosphate, are essential components for life as we know it on Earth.

An anonymous reader quotes a report from CNN: Dairy farmers in Denmark face having to pay an annual tax of 672 krone ($96) per cow for the planet-heating emissions they generate. The country's coalition government agreed this week to introduce the world's first carbon emissions tax on agriculture. It will mean new levies on livestock starting in 2030. Denmark is a major dairy and pork exporter, and agriculture is the country's biggest source of emissions. The coalition agreement -- which also entails investing 40 billion krone ($3.7 billion) in measures such as reforestation and establishing wetlands -- is aimed at helping the country meet its climate goals.

"With today's agreement, we are investing billions in the biggest transformation of the Danish landscape in recent times," Foreign Minister Lars Lokke Rasmussen said in a statement Tuesday. "At the same time, we will be the first country in the world with a (carbon) tax on agriculture." The Danish dairy industry broadly welcomed the agreement and its goals, but it has angered some farmers. [...] The tax, expected to be approved by Denmark's parliament later this year, will amount to 300 krone ($43) per tonne (1.1 ton) of CO2-equivalent emissions from livestock from 2030, rising to 750 krone ($107) in 2035. A 60% tax break will apply, meaning that farmers will effectively be charged 120 krone ($17) per tonne of livestock emissions per year from 2030, rising to 300 krone ($43) in 2035.

On average, Danish dairy cows, which account for much of the cattle population, emit 5.6 tons of CO2-equivalent per year, according to Concito, a green think tank in Denmark. Using the lower tax rate of 120 krone results in a charge of 672 krone per cow, or $96. With the tax break in place, that levy will rise to 1,680 krone per cow in 2035 ($241). In the first two years, the proceeds from the tax will be used to support the agricultural industry's green transition and then reassessed. "The whole purpose of the tax is to get the sector to look for solutions to reduce emissions," Concito's chief economist Torsten Hasforth told CNN. For example, farmers could change the feed they use.

Air freight operators have increased their greenhouse gas emissions by 25% compared to 2019, according to a report [PDF] by campaign group Stand.earth. The analysis found that operators ran about 300,000 more flights in 2023 than in 2019, a 30% increase in volume. The United States accounted for over 40% of global air freight emissions. The Guardian adds: FedEx and UPS were responsible for 24.7% of the industry's carbon emissions in 2023. It is estimated that 99.8% of aviation fuel is produced from fossil fuels, with the scaling of low carbon replacements a distant prospect. Research published last year forecast that global annual parcel volume could increase to 800bn parcels a year by 2030 [PDF], compared with 315bn in 2022.

In a new study published in the journal Nature Geoscience, scientists have identified a new Antarctic ice sheet "tipping point" where slight increases in the temperature of seawater infiltrating coastal ice sheets can lead to significant ice loss due to feedback loops that expand underwater cavities and accelerate ice collapse into the ocean. This mechanism could potentially cause future sea level rise to far exceed current predictions, impacting major global cities and billions of people. The Guardian reports: The researchers used computer models to show that a "very small increase" in the temperature of the intruding water could lead to a "very big increase" in the loss of ice -- ie, tipping point behavior. It is unknown how close the tipping point is, or whether it has even been crossed already. But the researchers said it could be triggered by temperature rises of just tenths of a degree, and very likely by the rises expected in the coming decades. [...] The new research [...] found that some Antarctic ice sheets were more vulnerable to seawater intrusion than others. The Pine Island glacier, currently Antarctica's largest contributor to sea level rise, is especially vulnerable, as the base of the glacier slopes down inland, meaning gravity helps the seawater penetrate. The large Larsen ice sheet is similarly at risk. The so-called "Doomsday" glacier, Thwaites, was found to be among the least vulnerable to seawater intrusion. This is because the ice is flowing into the sea so fast already that any cavities in the ice melted by seawater intrusion are quickly filled with new ice.

China brought a capsule full of lunar soil [non-paywalled link] from the far side of the moon down to Earth on Tuesday, achieving the latest success in an ambitious schedule to explore the moon and other parts of the solar system. From a report: The sample, retrieved by the China National Space Administration's Chang'e-6 lander after a 53-day mission, highlights China's growing capabilities in space and notches another win in a series of lunar missions that started in 2007 and have so far been executed almost without flaw. "Chang'e-6 is the first mission in human history to return samples from the far side of the moon," Long Xiao, a planetary geologist at China University of Geosciences, wrote in an email. "This is a major event for scientists worldwide," he added, and "a cause for celebration for all humanity."

Such sentiments and the prospects of international lunar sample exchanges highlighted the hope that China's robotic missions to the moon and Mars will serve to advance scientific understanding of the solar system. Those possibilities are contrasted by views in Washington and elsewhere that Tuesday's achievement is the latest milestone in a 21st-century space race with geopolitical overtones. In February, a privately operated American spacecraft landed on the moon. NASA is also pursuing the Artemis campaign to return Americans to the lunar surface, although its next mission, a flight by astronauts around the moon, has been delayed because of technical issues. China, too, is looking to expand its presence on the moon, landing more robots there, and eventually human astronauts, in the years to come.

Birth rates in the world's rich economies have more than halved since 1960 to hit a record low, according to a study that urged countries to prepare for a "lower fertility future." From a report: The average number of children per woman across the 38 most industrialised countries has fallen from 3.3 in 1960 to 1.5 in 2022, according to a study by the OECD published on Thursday. The fertility rate is now well below the "replacement level" of 2.1 children per woman -- at which a country's population is considered to be stable without immigration -- in all the group's member countries except for Israel. "This decline will change the face of societies, communities and families and potentially have large effects on economic growth and prosperity," warned the Paris-based organisation.

Faltering population growth acts as a drag on economic expansion. Across the EU, the rise in overall labour force participation will soon not be enough to compensate for its falling working-age population, exacerbating labour shortages, according to the IMF and European Commission's 2024 ageing report. Coupled with rising life expectancy, low births also put pressure on public finances as they leave fewer people contributing the tax revenues needed to pay for the rising costs of an ageing population. A lack of pupils is also driving an increase in school closures across Europe, Japan and South Korea.