"Crypto mines will have to start reporting their energy use in the U.S.," wrote the Verge in January, saying America's Energy department would "begin collecting data on crypto mines' electricity use, following criticism from environmental advocates over how energy-hungry those operations are."

But then "constitutional freedoms" group New Civil Liberties Alliance (founded with seed money from the Charles Koch Foundation) objected. And "on behalf of its clients" — the Texas Blockchain Council and Colorado bitcoin mining company Riot Platforms — the group said it "looks forward to derailing the Department of Energy's unlawful data collection effort once and for all."

While America's Energy department said the survey would take 30 minutes to complete, the complaint argued it would take 40 hours. According to the judge, the complaint "alleged three main sources of irreparable injury..."

- Nonrecoverable costs of compliance with the Survey
- A credible threat of prosecution if they do not comply with the Survey
- The disclosure of proprietary information requested by the Survey, thus risking disclosure of sensitive business strategy

But more importantly, the survey was implemented under "emergency" provisions, which the judge said is only appropriate when "public harm is reasonably likely to result if normal clearance procedures are followed."

Or, as Semafor.com puts it, the complaint was "seeking to push off the reporting deadline, on the grounds that the survey was rushed through...without a public comment period." The judge, Alan Albright, granted the request late Friday night, blocking the [Department of Energy's Information Administration] from collecting survey data or requiring bitcoin companies to respond to it, at least until a more comprehensive injunction hearing scheduled for Feb. 28. The ruling also concludes that the plaintiffs are "likely to succeed in showing that the facts alleged by the U.S. Energy Information Administration to support an emergency request fall far short of justifying such an action."
The U.S. Department of Energy is now...

• Restrained from requiring Plaintiffs or their members to respond to the Survey
• Restrained from collecting data required by the Survey
• "...and shall sequester and not share any such data that Defendants have already received from Survey respondents."

Thanks to long-time Slashdot reader schwit1 for sharing the news.

On Wednesday afternoon "a European Space Agency satellite reentered Earth's atmosphere over the North Pacific Ocean..." reports CNN, "and there have been no reports of damage, according to the agency." The agency's Space Debris Office, along with an international surveillance network, monitored and tracked the Earth-observing ERS-2 satellite throughout February to make predictions about the reentry, which occurred at 12:17 p.m. ET Wednesday. The ESA provided continuous live updates on its website. At around 50 miles (80 kilometers) above Earth's surface, the satellite broke apart due to atmospheric drag, and the majority of the fragments were expected to burn up in the atmosphere.

The agency said it was possible that some fragments could reach the planet's surface, but the pieces didn't contain any harmful substances and likely fell into the ocean... The ERS-2 satellite had an estimated mass of 5,057 pounds (2,294 kilograms) after depleting its fuel, according to the agency. "Uncontrolled Atmospheric reentry has long been a common method for disposing of space objects at the end of their mission," said Tim Flohrer, head of the agency's Space Debris Office, in a statement. "We see objects similar in size or larger to ERS-2 reentering the atmosphere multiple times each year."

The Earth-observing ERS-2 satellite first launched on April 21, 1995, and it was the most sophisticated satellite of its kind at the time to be developed and launched by Europe... In 2011, the agency decided to end the satellite's operations and deorbit it, rather than adding to the swirl of space junk orbiting the planet. The satellite executed 66 deorbiting maneuvers in July and August of 2011 before the mission officially concluded later that year on September 11. The maneuvers burned through the rest of the satellite's fuel and decreased its altitude, setting ERS-2's orbit on a trajectory to slowly spiral closer to Earth and reenter the atmosphere within 15 years.

The chances of an individual person being injured by space debris each year are less than 1 in 100 billion, about 1.5 million times lower than the risk of being killed in an accident at home, according to the agency.

On Thursday, the Odysseus Moon lander made history by becoming the first ever privately built and operated robot to complete a soft lunar touchdown. While the lander is "alive and well," the CEO of Houston-based Intuitive Machines, which built and flew the lander, said it tipped over during its final descent, coming up to rest propped up sideways on a rock. The BBC reports: Its owner, Texan firm Intuitive Machines, says Odysseus has plenty of power and is communicating with Earth. Controllers are trying to retrieve pictures from the robot. Steve Altemus, the CEO and co-founder of IM, said it wasn't totally clear what happened but the data suggested the robot caught a foot on the surface and then fell because it still had some lateral motion at the moment of landing. All the scientific instruments that planned to take observations on the Moon are on the side of Odysseus that should still allow them to do some work. The only payload likely on the "wrong side" of the lander, pointing down at the lunar surface, is an art project.

"We're hopeful to get pictures and really do an assessment of the structure and assessment of all the external equipment," Mr Altemus told reporters. "So far, we have quite a bit of operational capability even though we're tipped over. And so that's really exciting for us, and we are continuing the surface operations mission as a result of it." The robot had been directed to a cratered terrain near the Moon's south pole, and the IM team believes it got very close to the targeted site - perhaps within a couple of kilometers. A US space agency satellite called the Lunar Reconnaissance Orbiter will search for Odysseus in the coming days.

Microplastics have been found in sediment layers that date back as early as the first half of the 1700s, "showing microplastics' pernicious ability to infiltrate even environments untouched by modern humans," reports Futurism. From the report: A team of European researchers made this alarming discovery after studying the sediment layers at three lakes in Latvia, as detailed in a study published in the journal Science Advances. The scientists were studying lake sediment to test if the presence of microplastics in geological layers would be a reliable indicator for the beginning of the Anthropocene Epoch, defined in the study as starting in 1950 and meant to delineate when humans started having a large impact on our environment.

Scientists have long used layers of ash or ice to study past events on Earth, leading to the question of whether microplastics can serve as a reliable chronological marker for the Anthropocene. Clearly not, according to this new research, which found microplastics in every layer of sediment they dredged up, including one from 1733. "We conclude that interpretation of microplastics distribution in the studied sediment profiles is ambiguous and does not strictly indicate the beginning of the Anthropocene Epoch," the scientists wrote.

Three top-tier X-class solar flares launched off the sun between Wednesday and Thursday. The first two occurred seven hours apart, coming in at X1.9 and X1.6 magnitude respectively. The third, the most powerful of the current 11-year "solar cycle," ranked an impressive X6.3. From a report: Solar flares, or bursts of radiation, are ranked on a scale that goes from A, B and C to M and X, in increasing order of intensity. They usually originate from sunspots, or bruiselike discolorations on the surface of the sun. Sunspots are most common near the height of the 11-year solar cycle. The current cycle, number 25, is expected to reach its peak this year. The more sunspots, the more opportunities for solar flares.

Solar flares and accompanying coronal mass ejections, or CMEs, can influence "space weather" across the solar system, and even here on Earth. CMEs are slower shock waves of magnetic energy from the sun. Flares can reach Earth in minutes, but CMEs usually take at least a day. All three of the X-class solar flares disrupted shortwave radio communications on Earth. But the first two flares did not release a CME; the verdict is still out regarding whether the third flare did. High-frequency radio waves propagate by bouncing off electrons in Earth's ionosphere. That's a layer of Earth's atmosphere between 50 and 600 miles above the ground.

When a solar flare occurs, that radiation travels toward Earth at the speed of light. It can ionize additional particles in the lower ionosphere. Radio waves sent from devices below it then impact that extra-ionized layer and lose energy, and aren't able to be bent by ions at the top of the ionosphere. That means signals can't travel very far, and radio blackouts are possible. Three back-to-back radio blackouts occurred in response to the trio of flares, but primarily over the Pacific and Indian oceans. They were rated "R3" or greater on a 1 through 5 scale. According to the National Oceanic and Atmospheric Administration's Space Weather Prediction Center, that results in a "wide area blackout of [high frequency] radio communication, [and] loss of radio contact for about an hour on sunlit side of Earth." Low-frequency navigation signals, like those used on aircraft traveling overseas, can be degraded too.

Switzerland is advocating for a United Nations expert group to explore the merits of solar geoengineering. The proposal seeks to ensure multilateral oversight of solar radiation modification (SRM) research, amidst concerns over its potential implications for food supply, biodiversity, and global inequalities. The Guardian reports: The Swiss proposal, submitted to the United Nations environment assembly that begins next week in Nairobi, focuses on solar radiation modification (SRM). This is a technique that aims to mimic the effect of a large volcanic eruption by filling the atmosphere with sulphur dioxide particles that reflect part of the sun's heat and light back into space. Supporters of the proposal, including the United Nations environment program (UNEP), argue that research is necessary to ensure multilateral oversight of emerging planet-altering technologies, which might otherwise be developed and tested in isolation by powerful governments or billionaire individuals.

Critics, however, argue that such a discussion would threaten the current de-facto ban on geoengineering, and lead down a "slippery slope" towards legitimization, mainstreaming and eventual deployment. Felix Wertli, the Swiss ambassador for the environment, said his country's goal in submitting the proposal was to ensure all governments and relevant stakeholders "are informed about SRM technologies, in particular about possible risks and cross-border effects." He said the intention was not to promote or enable solar geoengineering but to inform governments, especially those in developing countries, about what is happening.

The executive director of the UNEP, Inger Andersen, stressed the importance of "a global conversation on SRM" in her opening address to delegates at a preliminary gathering in Nairobi. She and her colleagues emphasized the move was a precautionary one rather than an endorsement of the technology.

The Supreme Court's conservative majority seemed skeptical Wednesday as the Environmental Protection Agency sought to continue enforcing an anti-air-pollution rule in 11 states while separate legal challenges proceed around the country. From a report: The EPA's "good neighbor" rule is intended to restrict smokestack emissions from power plants and other industrial sources that burden downwind areas with smog-causing pollution. Three energy-producing states -- Ohio, Indiana and West Virginia -- challenged the rule, along with the steel industry and other groups, calling it costly and ineffective. The rule is on hold in a dozen states because of the court challenges.

The Supreme Court, with a 6-3 conservative majority, has increasingly reined in the powers of federal agencies, including the EPA, in recent years. The justices have restricted EPA's authority to fight air and water pollution -- including a landmark 2022 ruling that limited EPA's authority to regulate carbon dioxide emissions from power plants that contribute to global warming. The court also shot down a vaccine mandate and blocked President Joe Biden's student loan forgiveness program.

The court is currently weighing whether to overturn its 40-year-old Chevron decision, which has been the basis for upholding a wide range of regulations on public health, workplace safety and consumer protections. A lawyer for the EPA said the "good neighbor" rule was important to protect downwind states that receive unwanted air pollution from other states. Besides the potential health impacts, the states face their own federal deadlines to ensure clean air, said Deputy U.S. Solicitor General Malcolm Stewart, representing the EPA.

A spacecraft containing pharmaceutical drugs that were grown on orbit has finally returned to Earth today after more than eight months in space. From a report: Varda Space Industries' in-space manufacturing capsule, called Winnebago-1, landed in the Utah desert at around 4:40 p.m. EST. Inside the capsule are crystals of the drug ritonavir, which is used to treat HIV/AIDS. It marks a successful conclusion of Varda's first experimental mission to grow pharmaceuticals on orbit, as well as the first time a commercial company has landed a spacecraft on U.S. soil, ever. The capsule will now be sent back to Varda's facilities in Los Angeles for analysis, and the vials of ritonavir will be shipped to a research company called Improved Pharma for post-flight characterization, Varda said in a statement. The company will also be sharing all the data collected through the mission with the Air Force and NASA, per existing agreements with those agencies.

The first-of-its-kind reentry and landing is also a major win for Rocket Lab, which partnered with Varda on the mission. Rocket Lab hosted Varda's manufacturing capsule inside its Photon satellite bus; through the course of the mission, Photon provided power, communications, attitude control and other essential operations. At the mission's conclusion, the bus executed a series of maneuvers and de-orbit burns that put the miniature drug lab on the proper reentry trajectory. The final engine burn was executed shortly after 4 p.m. EST. Photon burned up in the atmosphere as planned while the capsule, protected by a heat shield and with the aid of a parachute, continued to land.

The brightest known object in the universe, a quasar 500tn times brighter than our sun, was "hiding in plain sight," researchers say. From a report: Australian scientists spotted a quasar powered by the fastest growing black hole ever discovered. Its mass is about 17bn times that of our solar system's sun, and it devours the equivalent of a sun a day. The light from the celestial object travelled for more than 12bn years to reach Earth. Australian National University scientists first spotted it using a 2.3-metre telescope at the university's NSW Siding Spring Observatory in Coonabarabran. They then confirmed the find using the European Southern Observatory's (ESO's) Very Large Telescope, which has a primary mirror of 8 metres. The findings by the ANU researchers, in collaboration with the ESO, the University of Melbourne, and France's Sorbonne Universite have been published in Nature Astronomy.

"For nearly a year now, a bizarre heating event has been unfolding across the world's oceans," reports Wired.

"In March 2023, global sea surface temperatures started shattering record daily highs and have stayed that way since..." Brian McNoldy, a hurricane researcher at the University of Miami. "It's really getting to be strange that we're just seeing the records break by this much, and for this long...." Unlike land, which rapidly heats and cools as day turns to night and back again, it takes a lot to warm up an ocean that may be thousands of feet deep. So even an anomaly of mere fractions of a degree is significant. "To get into the two or three or four degrees, like it is in a few places, it's pretty exceptional," says McNoldy.

So what's going on here? For one, the oceans have been steadily warming over the decades, absorbing something like 90 percent of the extra heat that humans have added to the atmosphere...

A major concern with such warm surface temperatures is the health of the ecosystems floating there: phytoplankton that bloom by soaking up the sun's energy and the tiny zooplankton that feed on them. If temperatures get too high, certain species might suffer, shaking the foundations of the ocean food web. But more subtly, when the surface warms, it creates a cap of hot water, blocking the nutrients in colder waters below from mixing upwards. Phytoplankton need those nutrients to properly grow and sequester carbon, thus mitigating climate change...

Making matters worse, the warmer water gets, the less oxygen it can hold. "We have seen the growth of these oxygen minimum zones," says Dennis Hansell, an oceanographer and biogeochemist at the University of Miami. "Organisms that need a lot of oxygen, they're not too happy when the concentrations go down in any way — think of a tuna that is expending a lot of energy to race through the water."
But why is this happening? The article suggests less dust blowing from the Sahara desert to shade the oceans, but also 2020 regulations that reduced sulfur aerosols in shipping fuels. (This reduced toxic air pollution — but also some cloud cover.)

There was also an El Nino in the Pacific ocean last summer — now waning — which complicates things, according to biological oceanographer Francisco Chavez of the Monterey Bay Aquarium Research Institute in California. "One of our challenges is trying to tease out what these natural variations are doing in relation to the steady warming due to increasing CO2 in the atmosphere."

But the article points out that even the Atlantic ocean is heating up — and "sea surface temperatures started soaring last year well before El Niño formed." And last week the U.S. Climate Prediction Center predicted there's now a 55% chance of a La Nina in the Atlantic between June and August, according to the article — which could increase the likelihood of hurricanes.

Thanks to long-time Slashdot reader mrflash818 for sharing the article.

Japanese scientists plan to launch a satellite made of magnolia wood this summer on a U.S. rocket, reports the Observer.

Experiments carried out on the International Space Station showed magnolia wood was unusually stable and resistant to cracking — and "when it burns up as it re-enters the atmosphere after completing its mission, will produce only a fine spray of Âbiodegradable ash." The LignoSat probe has been built by researchers at Kyoto University and the logging company Sumitomo Forestry in order to test the idea of using biodegradable materials such as wood to see if they can act as environmentally friendly alternatives to the metals from which all satellites are currently constructed. "All the satellites which re-enter the Earth's atmosphere burn and create tiny alumina particles, which will float in the upper atmosphere for many years," Takao Doi a Japanese astronaut and aerospace engineer with Kyoto University, warned recently. "Eventually, it will affect the environment of the Earth."

To tackle the problem, Kyoto researchers set up a project to evaluate types of wood to determine how well they could withstand the rigours of space launch and lengthy flights in orbit round the Earth. The first tests were carried out in laboratories that recreated conditions in space, and wood samples were found to have suffered no measurable changes in mass or signs of decomposition or damage. "Wood's ability to withstand these conditions astounded us," said Koji Murata, head of the project.

After these tests, samples were sent to the ISS, where they were subjected to exposure trials for almost a year before being brought back to Earth. Again they showed little signs of damage, a phenomenon that Murata attributed to the fact that there is no oxygen in space which could cause wood to burn, and no living creatures to cause it to rot.
The article adds that if it performs well in space, "then the door could be opened for the use of wood as a construction material for more satellites."

An article in the Washington Post remembers a 1980s-era "glass box with metal water pipes running through it" that "converted sunlight into hot water. By trapping solar energy like a greenhouse, it heated the water to a scorching 180 degrees Fahrenheit.

"[T]oday, hardly anyone is using these solar water heaters even as photovoltaic panels have popped up on the roofs of nearly 4 million American homes." Unlike photovoltaic panels, which can power your home, solar thermal panels are mainly used to heat water. But they're smaller and more efficient. The technology converts 60 to 70 percent of the sun's energy into heat. Even the best photovoltaics, which generate electricity, only achieve 24 percent efficiency. Now, a new generation of solar water heater manufacturers is hoping subsidies under the Inflation Reduction Act, and growing interest in net-zero emissions, will reignite their growth.

Theoretically, solar thermal offers a big opportunity to slash emissions. Nearly 20 percent of an average home's energy is used to heat water, and nearly 50 percent globally, according to MIT. By adopting solar water heaters, the average household can keep 2 tons of carbon dioxide out of the atmosphere, the equivalent of not driving your car for four months, estimates the Environmental Protection Agency. Solar water heaters can also save money, cutting the average utility bill by $400 to $600 per year, the Energy Department estimates...

Only about 370,000 solar thermal systems were operating in the United States by the end of 2021, according to the International Energy Agency, many of them on larger commercial buildings...

Since they can cut fuel consumption to heat water by 50 percent to 70 percent, other countries are embracing the technology: Almost all new residential buildings in Israel must include solar thermal, while in countries as far north as Canada and Denmark, solar thermal energy warms millions of homes with district heating systems. Yet these systems represent a tiny fraction of the potential, supplying 0.4 percent of today's global energy demand for domestic hot water.
New U.S. subsidies can cut the price in half depending on location, the article points out.

Cheap photovoltaics still make economic sense for many homes (unless you're heating a pool). "But the cost of solar thermal could look like a bargain if we consider increasingly unreliable electric grids and the cost to the climate from burning fossil fuels."

For the first time, scientists say they've detected water molecules on the surface of an asteroid. Space.com reports: Scientists studied four silicate-rich asteroids using data gathered by the now-retired Stratospheric Observatory for Infrared Astronomy (SOFIA), a telescope-outfitted plane operated by NASA and the German Aerospace Center. Observations by SOFIA's Faint Object InfraRed Camera (FORCAST) instrument showed that two of the asteroids -- named Iris and Massalia -- exhibit a specific wavelength of light that indicated the presence of water molecules at their surface, a new study reports.

While water molecules have previously been detected in asteroid samples returned to Earth, this is the first time that water molecules have been found on the surface of an asteroid in space. In a previous study, SOFIA found similar traces of water on the surface of the moon, in one of the largest craters in its southern hemisphere. [...]

Therefore, the findings at Iris and Massalia suggest that some silicate asteroids can conserve some of their water over the eons and may be more commonly found in the inner solar system than previously thought. In fact, asteroids are believed to be the primary source of Earth's water, providing the necessary elements for life as we know it. Understanding of the distribution of water through space will help researchers better assess where to search for other forms of potential life, both in our solar system and beyond. The findings have been published in The Planetary Science Journal.

According to NASA, the OSIRIS-REx mission has successfully collected 121.6 grams, or almost 4.3 ounces, of rock and dust from the asteroid Bennu. Universe Today reports: These samples have been a long time coming. The OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) was approved by NASA back in 2011 and launched in September 2016. It reached its target, the carbonaceous Apollo group asteroid 101955 Bennu, in December 2018. After spending months studying the asteroid and reconnoitring for a suitable sampling location, it selected one in December 2019. After two sampling rehearsals, the spacecraft gathered its sample on October 20th, 2020. In September 2023, the sample finally returned to Earth.

For OSIRIS-REx to be successful, it had to collect at least 60 grams of material. With a final total that is double that, it should open up more research opportunities and allow more of the material to be held untouched for future research. NASA says they will preserve 70% of the sample for the future, including for future generations. The next step is for the material to be put into containers and sent to researchers. More than 200 researchers around the world will receive samples. Many of the samples will find their way to scientists at NASA and institutions in the US, while others will go to researchers at institutions associated with the Canadian Space Agency, JAXA, and other partner nations. Canada will receive 4% of the sample, the first time that Canada's scientific community will have direct access to a returned asteroid sample.

Dumping chemicals in the ocean? Spraying saltwater into clouds? Injecting reflective particles into the sky? Scientists are resorting to once unthinkable techniques to cool the planet because global efforts to check greenhouse gas emissions are failing. From a report: These geoengineering approaches were once considered taboo by scientists and regulators who feared that tinkering with the environment could have unintended consequences, but now researchers are receiving taxpayer funds and private investments to get out of the lab and test these methods outdoors. The shift reflects growing concern that efforts to reduce greenhouse gas emissions aren't moving fast enough to prevent the destructive effects of heat waves, storms and floods made worse by climate change. Geoengineering isn't a substitute for reducing emissions, according to scientists and business leaders involved in the projects. Rather, it is a way to slow climate warming in the next few years while buying time to switch to a carbon-free economy in the longer term.

Three field experiments are under way in the U.S. and overseas. This month, researchers aboard a ship off the northeastern coast of Australia near the Whitsunday Islands are spraying a briny mixture through high-pressure nozzles into the air in an attempt to brighten low-altitude clouds that form over the ocean. Scientists hope bigger, brighter clouds will reflect sunlight away from the Earth, shade the ocean surface and cool the waters around the Great Barrier Reef, where warming ocean temperatures have contributed to massive coral die-offs. The research project, known as marine cloud brightening, is led by Southern Cross University as part of the $64.55 million, or 100 million Australian dollars, Reef Restoration and Adaptation Program. The program is funded by the partnership between the Australian government's Reef Trust and the Great Barrier Reef Foundation and includes conservation organizations and several academic institutions.

An anonymous reader shares a report: When California state legislators passed a 2014 law banning single-use plastic bags, the hope was that it would notably reduce the amount of discarded plastic. But fast-forward nearly a decade: Californians are tossing more pounds of plastic bags than before the legislation was passed. That's according to a recent report by the consumer advocacy group CALPIRG, which took population changes into account and found the tonnage of discarded bags rose from 4.08 per 1,000 people in 2014 to 5.89 per 1,000 people in 2022. How could this happen?

As Susanne Rust reported this week, plastic bag manufacturers replaced one kind of plastic bag for another. You've probably noticed them at grocery stores or had them loaded into your car during a drive-up order. These newer bags are thicker and meet technical specifications to be called "reusable." As Jenn Engstrom, CALPIRG'S state director, explained to Susanne, the switch created a loophole because the newer bags -- which typically cost 10 cents -- "are clearly not being reused and don't look like reusable bags and ... just circumvent the law's intent." The pandemic was also a contributing factor. COVID restrictions led many to get groceries, restaurant dishes and other products delivered to our doors, often in thick plastic bags.

There's an effort to close the loophole, though. New legislation is being proposed that would also ban the thicker plastic bags from grocery and large retail stores. Clearly, not enough consumers have changed their plastic bag habits at the checkout stand. But the onus isn't on individuals. Plastic manufacturers create these products. Businesses buy the bags so customers have somewhere to put the goods they buy from businesses. [...] Under the new law, at least 30% of plastic items sold, distributed or imported into California must be recyclable by Jan. 1, 2028. It also stipulates that single-use plastic waste be reduced 25% by 2032. But as Susanne pointed out, plastics companies will have notable oversight and authority over the program "via a Producer Responsibility Organization, which will be made up of industry representatives."

Now that it can be strapped to our faces and worn to strange places, opinions about Apple's Vision Pro are flying left and right. Entering the chat is Meta CEO Mark Zuckerberg, who has more at stake than perhaps anyone on earth if Apple does to headsets what the iPhone did to smartphones. From a report: In a video posted to his Instagram account on Tuesday, Zuckerberg gives his official verdict on the Vision Pro versus his company's latest Quest 3 headset: "I don't just think that Quest is the better value, I think Quest is the better product, period." While being filmed by the Quest 3's video passthrough system in his living room, Zuckerberg highlights the tradeoffs Apple made to get the fanciest display possible into something that can be worn on your head in an acceptable form factor. He says the Quest 3 weighs 120 grams less, making it more comfortable to wear for longer. He also says it allows for greater motion due to its lack of a wired battery pack and wider field of view than the Vision Pro.

He thinks the Quest's option of physical hand controllers and hand tracking for input is better, though he says he's a fan of eye tracking for some use cases and teases that it will return to future Meta headsets after debuting in the Quest Pro. He says the Quest has a better "immersive" content library than Apple, which is technically true for now, though he admits that the Vision Pro is a better entertainment device. And then there's the fact that the Quest 3 is, as Zuck says, "like seven times less expensive."

An anonymous reader shared this report from the Associated Press: An abrupt shutdown of Atlantic Ocean currents that could put large parts of Europe in a deep freeze is looking a bit more likely and closer than before as a new complex computer simulation finds a "cliff-like" tipping point looming in the future. A long-worried nightmare scenario, triggered by Greenland's ice sheet melting from global warming, still is at least decades away if not longer, but maybe not the centuries that it once seemed, a new study in Friday's Science Advances finds.

The study, the first to use complex simulations and include multiple factors, uses a key measurement to track the strength of vital overall ocean circulation, which is slowing. A collapse of the current — called the Atlantic Meridional Overturning Circulation or AMOC — would change weather worldwide because it means a shutdown of one of key the climate and ocean forces of the planet. It would plunge northwestern European temperatures by 9 to 27 degrees (5 to 15 degrees Celsius) over the decades, extend Arctic ice much farther south, turn up the heat even more in the Southern Hemisphere, change global rainfall patterns and disrupt the Amazon, the study said. Other scientists said it would be a catastrophe that could cause worldwide food and water shortages.

"We are moving closer (to the collapse), but we we're not sure how much closer," said study lead author Rene van Westen, a climate scientist and oceanographer at Utrecht University in the Netherlands. "We are heading towards a tipping point." When this global weather calamity — grossly fictionalized in the movie "The Day After Tomorrow" — may happen is "the million-dollar question, which we unfortunately can't answer at the moment," van Westen said. He said it's likely a century away but still could happen in his lifetime. He just turned 30.

"It also depends on the rate of climate change we are inducing as humanity," van Westen said.

Thursday a climate technology startup called Twelve "took a major step toward producing sustainable aviation fuel..." reports Bloomberg, "by launching its commercial-scale carbon transformation unit." Twelve is among the emerging companies working on ways to transform captured CO2 into useful products. In the case of the Berkeley, California-based startup, its nascent technology will be critical to cleaning up one of the hardest-to-decarbonize sectors: aviation. Twelve uses a technique called electrolysis that uses electricity to repurpose carbon dioxide and water into various products. When the electricity is generated from renewables, the process is essentially no-carbon. The company's CO2 electrochemical reactor — called OPUS — will be at the center of its first commercial production plant for sustainable aviation fuel, under construction in Moses Lake and set to be completed this year. The plant will run on hydropower and use CO2 captured from a nearby ethanol plant. That CO2 and water will be fed through OPUS and turned into synthetic gas, the basis of sustainable aviation fuel.

Twelve's airline customers can blend it with traditional jet fuel. The resulting carbon credit can be bought by corporate customers like Microsoft to offset their business travel-related emissions...

Although Twelve's carbon transformation technology can be used to make products ranging from spandex pants to car parts, it pivoted to focus more fully on sustainable aviation fuel after the announcement of tax credits for SAF blending, carbon capture and utilization, and hydrogen production, said Twelve co-founder and Chief Science Officer Etosha Cave. Those tax credits helped the company launch this commercial unit. "Without that, we would not be competitive in terms of being able to get to market at the stage we're at," Cave said.
It's still not cost competitive with traditional jet fuel, the article points out, "but airlines are under increasing pressure from governments and their own net zero commitments to integrate SAF into their fuel mix.

"Twelve would not disclose its cost to make the fuel, though it said it expects prices to go down as its technology scales up and eventually reach parity with traditional jet fuel."

Earth had its first year-long, 1.5-degree rise in temperature. But does this mean we've already missed our goal of limiting temperature increases to 1.5 degrees?

No, argues the Washington Post: There's actually some disagreement about what exactly counts as breaching that threshold — but scientists and policymakers agree that it has to be a multiyear average, not a single 12-month period. Scientists estimate that without dramatic emissions reductions, that will happen sometime in the 2030s. But there could be other single years or 12-month periods that cross the line before then.

Can we still avoid passing 1.5C?

Most scientists say passing 1.5C is inevitable. "The 1.5-degree limit is deader than a doornail," Columbia University climate scientist James Hansen said in a call with reporters late last year.... The Washington Post analyzed 1,200 modeled pathways for the world to shift to clean energy and found that only four of them showed the world hitting the 1.5C target without substantially overshooting or using speculative technology (like large-scale carbon capture) that doesn't yet exist. At this point, many experts believe that the economy is too stuck on fossil fuels to transition fast enough for 1.5 degrees.

Does that mean we'll pass catastrophic tipping points?

That's a more difficult question. Scientists don't know exactly when certain tipping points — like the collapse of the Greenland ice sheet or the release of greenhouse gases from thawing permafrost — will occur. It's very hard to predict and model these types of catastrophic changes. And 1.5C isn't a magic threshold; it's not as though as soon as we pass that number, Antarctic ice sheets will collapse and ocean circulations will grind to a halt. But one thing is certain: For every tenth of a degree of warming, tipping points are more likely. Two degrees is worse than 1.9 degrees, which is worse than 1.8 degrees, and so on.

And at each tenth of a degree, the infrastructure and systems that the world has built — electric grids, homes, livelihoods — will become more strained. Our modern world simply was not designed for temperatures this high. At some level, the final temperature of the planet isn't what matters most. It's where countries can actually get carbon emissions to zero — and stop contributing to future warming altogether.