On Sunday, global temperatures reached their highest levels in recorded history (source may be paywalled; alternative source), with a daily average of 17.09 degrees Celsius (62.76 degrees Fahrenheit). "The historic day comes on the heels of 13 straight months of unprecedented temperatures and the hottest year scientists have ever seen," adds the Washington Post, citing preliminary data from the Copernicus Climate Change Service. From the report: Though Sunday was only slightly warmer than the world's previous hottest day, Copernicus researchers noted, it was extraordinarily hotter than anything that came before. Before July 2023, Earth's daily average temperature record -- set in August 2016 -- was 16.8 degrees Celsius (62.24 degrees Fahrenheit). But in the past year, the global has exceeded that old record on 57 days.

Scientists have been tracking global temperatures only for the past few centuries. Yet there is good reason to believe that Sunday was the hottest day on Earth since the start of the last Ice Age more than 100,000 years ago. Research from paleoclimate scientists -- who use tree rings, ice cores, lake sediments and other ancient material to understand past environments -- suggests that recent heat would have been all but impossible over the last stretch of geologic time. "We are in truly uncharted territory," Copernicus director Carlo Buontempo said in a statement. "And as the climate keeps warming, we are bound to see records being broken in future months and years. What is truly staggering is how large the difference is between the temperature of the last 13 months and the previous temperature records."

Parts of the Persian Gulf "have seen the heat index, or how it feels when factoring in the humidity, reach 140 to 150 degrees Fahrenheit (60 to 65 Celsius)," reports the Washington Post, "fueled by an intense heat dome, the warmest water temperatures in the world and the influence of human-caused climate change." Temperatures at the Persian Gulf International Airport in Asaluyeh, Iran, climbed to 108 (42 C) on Wednesday and 106 (41 C) on Thursday, with both days recording a peak heat index of 149 (65 C). In Dubai, the temperature topped out at 113 (45 C) on Tuesday and the heat index soared to 144 (62 C). Other extreme heat indexes in recent days include 141 (61 C) in Abu Dhabi and 136 (58 C) at Khasab Air Base in Oman.

Last August, this same region experienced even more extreme heat indexes, climbing as high as 158 degrees (70 C).

The maximum air temperatures this week — generally between 105 and 115 (41 and 46 C) — have only been somewhat above normal. But the dew points — which are a measure of humidity — have been excessive, climbing well into the 80s (27 to 32 C). In the United States, any dew point over 70 degrees (21 C) is considered uncomfortably humid. It's the very high dew points that have propelled heat indexes up to 30 degrees (16 C) above actual air temperatures. The extreme humidity levels are tied to bathtub-like water temperatures in the Persian Gulf, the warmest in the world. According to National Oceanic and Atmospheric Administration data, sea surface temperatures are as warm as 95 degrees (35 C).

Largely because of the high humidity, nighttime minimum temperatures have also remained exceptionally warm, in many cases staying above 85 (29 C). Temperatures in Iranshar, Iran, only dropped to 97 (36 C) on Wednesday night, its hottest July night on record.
"Researchers have identified the Persian Gulf among the regions most likely to regularly exceed life-threatening heat thresholds during the next 30 to 50 years," the article adds. And it also cites new heat records reported for the region by weather historian Maximiliano Herrera. "The United Arab Emirates saw a scorching high temperature of 123 while Adrar, Algeria, tied its record of 122 (50 C). Cities in both Kuwait and Iraq reached 126 (52 C), and Al Ahsa, Saudi Arabia, notched a record of 124 (51 C)...

"The same heat dome that's in the Persian Gulf region has spread record heat northward into Eastern Europe, westward into northern Africa, and eastward into India, Pakistan and Indonesia. In Eastern Europe, high temperatures surpassed 104 (40 C), with some locations staying above 85 degrees (29 C) at night."

A solar superstorm in May caused thousands of satellites to simultaneously maneuver to maintain altitude due to the thickening of the upper atmosphere, creating potential collision hazards as existing prediction systems struggled to cope. Space.com reports: According to a pre-print paper published on the online repository arXiv on June 12, satellites and space debris objects in low Earth orbit -- the region of space up to an altitude of 1,200 miles (2,000 kilometers) -- were sinking toward the planet at the speed of 590 feet (180 meters) per day during the four-day storm. To make up for the loss of altitude, thousands of spacecraft began firing their thrusters at the same time to climb back up. That mass movement, the authors of the paper point out, could have led to dangerous situations because collision avoidance systems didn't have time to calculate the satellites' changing paths.

The solar storm that battered Earth from May 7 to 10 reached the intensity of G5, the highest level on the five-step scale used by the National Oceanic and Atmospheric Administration (NOAA) to assess the strength of solar storms. It was the strongest solar storm to hit Earth since 2003. The authors of the paper, however, pointed out that the environment around the planet has changed profoundly since that time. While only a few hundred satellites were orbiting Earth twenty years ago, there are thousands today. The authors of the paper put the number of "active payloads at [low Earth orbit]" at 10,000. [...] The new paper points out that space weather forecasts ahead of the May storm failed to accurately predict the duration and intensity of the event, making satellite collision predictions nearly impossible.

On the upside, the storm helped to clear out some junk as defunct satellites and debris fragments spiraled deeper into the atmosphere. The authors of the report estimate that thousands of space debris objects lost several kilometers in altitude during the storm. More powerful solar storms can be expected in the coming months as the peak of the current solar cycle -- the 11-year ebb and flow in the number of sunspots, solar flares and eruptions -- is expected in late 2024 and early 2025. The paper can be found here.

Astronomers say they've detected two gases that could indicate the presence of life forms lurking in the clouds of Venus. The Guardian reports: Findings presented at the national astronomy meeting in Hull on Wednesday bolster evidence for a pungent gas, phosphine, whose presence on Venus has been fiercely disputed. A separate team revealed the tentative detection of ammonia, which on Earth is primarily produced by biological activity and industrial processes, and whose presence on Venus scientists said could not readily be explained by known atmospheric or geological phenomena. "It could be that if Venus went through a warm, wet phase in the past then as runaway global warming took effect [life] would have evolved to survive in the only niche left to it -- the clouds," said Dr Dave Clements, a reader in astrophysics at Imperial College London, told the meeting. "Our findings suggest that when the atmosphere is bathed in sunlight the phosphine is destroyed," Clements said. "All that we can say is that phosphine is there. We don't know what's producing it. It may be chemistry that we don't understand. Or possibly life."

In a second talk, Prof Jane Greaves, an astronomer at Cardiff University, presented preliminary observations from the Green Bank telescope indicating ammonia, which on Earth is made through either industrial processes or by nitrogen-converting bacteria. Greaves said: "Even if we confirmed both of these [findings], it is not evidence that we have found these magic microbes and they're living there today," adding that there were not yet "any ground truths." Dr Robert Massey, the deputy executive director at the Royal Astronomical Society, said in a statement: "These are very exciting findings but it must be stressed that the results are only preliminary and more work is needed to learn more about the presence of these two potential biomarkers in Venus's clouds. Nevertheless, it is fascinating to think that these detections could point to either possible signs of life or some unknown chemical processes. It will be interesting to see what further investigations unearth over the coming months and years."

An anonymous reader quotes a report from CNBC: CNBC spoke to three startups -- France-based Zephalto, Florida-based Space Perspective and Arizona-based World View -- that aim to hoist tourists to the stratosphere using pressurized capsules and massive gas-filled balloons. "The capsule itself is designed to to carry eight customers and two crew into the stratosphere," said Ryan Hartman, CEO of World View. "There will be a center bar where people can gather, and then, of course, there will be a bathroom aboard the capsule." The balloon rides will last around 6 hours, but will not take passengers all the way to space. Most will reach heights of 15 to 19 miles above the earth's surface, flying in an area known as the stratosphere. The start of space is generally accepted by the U.S. government to be around 80 kilometers, or about 50 miles, above the earth's surface.

Jane Poynter, founder and co-CEO of Space Perspective, has a differing view. "There is no universal definition of space," Poynter said. "We are regulated as a spaceship. If we go over 98,000 feet, we are a spaceship. Outside the capsule, it's essentially a vacuum. We're above 99% of Earth's atmosphere, which is why the sky is so deep black." Compared to rocket-powered space tourism, the physical sensation that passengers will experience on a stratospheric balloon ride is more comparable to being on an airplane. Passengers will not experience weightlessness. "We don't need any physical requirements to board the balloon," said Vincent Farret d'Asties, the founder and chief pilot at Zephalto. "If you can board a standard plane, you can board the balloon."

All three companies told CNBC that they were pleased with consumer interest. World Views says it sold 1,250 tickets so far while Space Perspective has sold 1,800. Zephalto did not tell CNBC how many tickets it sold, but said its initial flights were fully booked. Ticket prices range from $50,000 per seat with World View to around $184,000 with Zephalto. Space Perspective sells tickets to its experience for $125,000 per seat. That's all assuming commercial service gets off the ground. Only Zephalto has performed crewed tests so far, though not at the company's target altitude of about 15 miles above the earth's surface.

An anonymous reader quotes a report from The Verge: Puerto Rico filed suit against fossil fuel companies this week, alleging that the oil and gas giants have misled the public about climate change and delayed a transition to clean energy. The suit seeks $1 billion in damages to help Puerto Rico defend itself against climate disasters. In a complaint (PDF) filed in San Juan yesterday, Puerto Rico's Department of Justice says that the companies violated trade law by promoting fossil fuels without adequately warning about the dangers. The defendants include ExxonMobil, BP, Chevron, Shell, ConocoPhillips, and other energy companies.

In the complaint, Puerto Rico says it expects to pay billions of dollars in the future to cope with catastrophes made worse by climate change -- including storms like Hurricane Maria, which killed thousands of people in 2017 and triggered monthslong power outages. The suit asks defendants to contribute to a fund that would be used to mitigate the consequences of climate change and pay for measures to strengthen Puerto Rico's infrastructure against future climate-related calamities. After Hurricane Maria devastated the island in 2017, thirty-seven municipalities in Puerto Rico and the capital city of San Juan filed suit against fossil fuel companies, "seeking to hold them accountable for the devastation," notes The Verge.

Last week, Portland's Multnomah County filed a lawsuit against several fossil fuel companies, blaming their emissions for the 2021 heat dome that resulted in the deaths of 69 people.

NASA: The stars above and on Earth aligned as an inspirational message and lyrics from the song "The Rain (Supa Dupa Fly)" by hip-hop artist Missy Elliott were beamed to Venus via NASA's DSN (Deep Space Network). The agency's Jet Propulsion Laboratory in Southern California sent the transmission at 10:05 a.m. PDT on Friday, July 12. As the largest and most sensitive telecommunication service of NASA's Space Communications and Navigation (SCaN) program, the DSN has an array of giant radio antennas that allow missions to track, send commands, and receive scientific data from spacecraft venturing to the Moon and beyond. To date, the system has transmitted only one other song into space, making the transmission of Elliott's song a first for hip-hop and NASA.

"Both space exploration and Missy Elliott's art have been about pushing boundaries," said Brittany Brown, director, Digital and Technology Division, Office of Communications at NASA Headquarters in Washington, who initially pitched ideas to Missy's team to collaborate with the agency. "Missy has a track record of infusing space-centric storytelling and futuristic visuals in her music videos, so the opportunity to collaborate on something out of this world is truly fitting." The song traveled about 158 million miles (254 million kilometers) from Earth to Venus -- the artist's favorite planet. Transmitted at the speed of light, the radio frequency signal took nearly 14 minutes to reach the planet. The transmission was made by the 34-meter (112-foot) wide Deep Space Station 13 (DSS-13) radio dish antenna, located at the DSN's Goldstone Deep Space Communications Complex, near Barstow in California. Coincidentally, the DSS-13 also is nicknamed Venus.

AI companies are generally secretive about their sources of training data, but an investigation by Proof News found some of the wealthiest AI companies in the world have used material from thousands of YouTube videos to train AI. Companies did so despite YouTube's rules against harvesting materials from the platform without permission. From a report: Our investigation found that subtitles from 173,536 YouTube videos, siphoned from more than 48,000 channels, were used by Silicon Valley heavyweights, including Anthropic, Nvidia, Apple, and Salesforce. The dataset, called YouTube Subtitles, contains video transcripts from educational and online learning channels like Khan Academy, MIT, and Harvard. The Wall Street Journal, NPR, and the BBC also had their videos used to train AI, as did The Late Show With Stephen Colbert, Last Week Tonight With John Oliver, and Jimmy Kimmel Live.

Proof News also found material from YouTube megastars, including MrBeast (289 million subscribers, two videos taken for training), Marques Brownlee (19 million subscribers, seven videos taken), Jacksepticeye (nearly 31 million subscribers, 377 videos taken), and PewDiePie (111 million subscribers, 337 videos taken). Some of the material used to train AI also promoted conspiracies such as the "flat-earth theory." Further reading: YouTube Says OpenAI Training Sora With Its Videos Would Break Rules.

The climate crisis is causing the length of each day to get longer, analysis shows, as the mass melting of polar ice reshapes the planet. From a report: The phenomenon is a striking demonstration of how humanity's actions are transforming the Earth, scientists said, rivalling natural processes that have existed for billions of years. The change in the length of the day is on the scale of milliseconds but this is enough to potentially disrupt internet traffic, financial transactions and GPS navigation, all of which rely on precise timekeeping.

The length of the Earth's day has been steadily increasing over geological time due to the gravitational drag of the moon on the planet's oceans and land. However, the melting of the Greenland and Antarctic ice sheets due to human-caused global heating has been redistributing water stored at high latitudes into the world's oceans, leading to more water in the seas nearer the equator. This makes the Earth more oblate -- or fatter -- slowing the rotation of the planet and lengthening the day still further.

The planetary impact of humanity was also demonstrated recently by research that showed the redistribution of water had caused the Earth's axis of rotation -- the north and south poles -- to move. Other work has revealed that humanity's carbon emissions are shrinking the stratosphere.

"In a significant advancement for space technology, a team of UC Berkeley researchers, led by doctoral student Taylor Waddell, successfully launched a 3D printer into space," reports the university's student newspaper: As part of the Virgin Galactic 07 mission, the team sent a 3D printer named SpaceCAL to space to explore the potential of Computed Axial Lithography, or CAL, and additive manufacturing in space... During its 140-second flight in suborbital space, the SpaceCAL printer autonomously detected microgravity and printed four test parts: two space shuttles and two Benchies, or 3D-printed boats created to check the printer's accuracy, according to Sean Chu, a member of the team who worked on designing structures and mechanisms. Within the 140 seconds, the process involved multiple steps such as printing, post-washing, flushing with water and post-curing with light to fully solidify the parts.
But that's just the beginning, says the university's engineering department: To date, CAL has shown that it can successfully print with more than 60 different materials on Earth, such as silicones, glass composites and biomaterials. According to Waddell, this versatility could come in handy for both the cabin and the crew... "CAL is also capable of repairing the crew. We can print dental replacements, skin grafts or lenses, or things personalized in emergency medicine for astronauts, which is very important in these missions, too."

Someday, CAL may be used to print even more sophisticated parts, such as human organs. Lawrence Livermore National Lab has received a grant from NASA to test this technology on the International Space Station. "They're going to basically do bioprinting on the Space Station," said Waddell. "And the long, long-term goal is to print organs up in space with CAL, then bring them back down to Earth." Next, Waddell and his colleagues hope to begin work with NASA on developing and validating a single object that could support crew health and wellness, like a dental crown for an astronaut or a surgical wound closure tool...

This project was made possible through a $1.4 million grant and engineering support provided by NASA. In addition, Virgin Galactic played a pivotal role in taking this project to the next level.

"Researchers are proposing a new way to battle the effects of climate change..." writes Science magazine: slowing the rising of sea levels with "glacial geoengineering". (That is, "building flexible barriers around them or drilling deep into them to slow their slippage into the sea.") Geoengineering proponents say it would be better to begin research now on how to staunch sea level rise at its source, rather than spending billions and billions of dollars to wall off coastal cities. "At some point you have to think, 'Well, is there anything else we can do?'" asks glaciologist John Moore of the University of Lapland, an author on the white paper, which was sponsored by the University of Chicago. One idea researched by Moore and covered in the report is to build buoyant "curtains," moored to the sea floor beyond the edge of ice shelves and glaciers, to block natural currents of warm water that erode ice sheets from below. (Especially in Antarctica, warming ocean water is a bigger threat to glaciers than warming air.)

Early designs called for plastic, but natural fibers such as canvas and sisal are now being considered to avoid pollution concerns. According to the white paper, initial modeling studies show that curtain heights stretching only partway up from the sea floor off the coast of western Antarctica could reduce glacial melting by a factor of 10 in some locations. Another intervention some scientists are contemplating would slow the slippage of ice sheets by drilling holes to their bases and pumping out water or heat.

Such massive engineering efforts would surely be some of the most expensive ever undertaken by humanity. At a workshop at the University of Chicago in October 2023, researchers suggested it might cost $88 billion to build 80 kilometers of curtains around Antarctic glaciers. Interventions would also require international political support, which some glaciologists view as an even bigger hurdle than the price tag. Twila Moon, a glaciologist at the U.S. National Snow and Ice Data Center, says such projects would require fleets of icebreakers, extensive shipping and supply chain needs, and significant personnel to construct, maintain, and guard the final structures — in ocean conditions she calls "eye-poppingly difficult." The projects could also incur unintended consequences, potentially disrupting ocean circulation patterns or endangering wildlife. Furthermore, it would take decades to find out whether the interventions were working.

Even if the engineering and logistics were possible, that "does not answer the question of whether it should be pursued," says Moon, who opposes even preliminary studies on the concepts.
"The report, which also stresses the importance of emissions reductions, takes pains to say it 'does not advocate for intervention; rather, it advocates for research into whether any interventions may be viable'..."

clovis (Slashdot reader #4,684) writes: Joe Engle received his astronaut wings in a ceremony on July 15, 1965, for his flight in the hypersonic aircraft, reaching an altitude of 50 miles above the Earth. At 32, he was the youngest man to become an astronaut.

Later, he entered the Apollo program and eventually commanded the STS-2 flight of the Space Shuttle.

Here is an interview from 2004. I thought it was interesting that they used the F-104 as the chase plane and for training because the flight characteristics were so similar, which says a lot about the F-104.

Anyway, the X-15 project was a big deal for us science/geek types back when I was a kid. I wonder if it's something today's generation is even aware of.

An anonymous reader quotes a report from Reuters: SpaceX's workhorse Falcon 9 rocket was grounded by the U.S. Federal Aviation Administration (FAA) on Friday after one broke apart in space and doomed its payload of Starlink satellites, the first failure in more than seven years of a rocket relied upon by the global space industry. Roughly an hour after Falcon 9 lifted off from the Vandenberg Space Force Base in California on Thursday night, the rocket's second stage failed to reignite and deployed its 20 Starlink satellites on a shallow orbital path where they will soon reenter and burn up in Earth's atmosphere.

The attempt to reignite the engine "resulted in an engine RUD for reasons currently unknown," SpaceX CEO Elon Musk wrote early on Friday on his social media platform X, using an industry acronym for Rapid Unscheduled Disassembly that usually means explosion. The Falcon 9 will be grounded until SpaceX investigates the cause of the failure, fixes the rocket and receives the agency's approval, the FAA said in a statement. That process could take several weeks or months, depending on the complexity of the failure and SpaceX's plan to fix it. Musk said SpaceX was updating the software of the Starlink satellites to force their on-board thrusters to fire harder than usual to avoid a fiery atmospheric re-entry. "Unlike a Star Trek episode, this will probably not work, but it's worth a shot," Musk said.

The satellites' altitude is so shallow that Earth's gravity is pulling them 3 miles (5 km) closer toward the atmosphere with each orbit, SpaceX later said, confirming they would inevitably "re-enter Earth's atmosphere and fully demise." SpaceX said the second stage's failure occurred after engineers detected a leak of liquid oxygen, a propellant. The mishap occurred on Falcon 9's 354th mission. It was the first Falcon 9 failure since 2016, when a rocket exploded on a launch pad in Florida and destroyed its customer payload, an Israeli communications satellite. The failure "breaks a success streak of more than 300 straight missions," notes Reuters.

"We knew this incredible run had to come to an end at some point," Tom Mueller, SpaceX's former vice president of propulsion who designed Falcon 9's engines. "... The team will fix the problem and start the cycle again."

The world risks missing a goal to triple renewable energy capacity by 2030 as the current growth rate is inadequate, a report by the International Renewable Energy Agency (IRENA) showed on Thursday. From a report: A U.N. climate change conference in Dubai last year set a goal of tripling renewable energy capacity worldwide by 2030 to more than 11 terawatts (TW). Countries have to submit new or updated climate target commitments every five years after 2020 so next year they have to include revised ambitions for 2030. About 473 gigawatts (GW) of capacity was added last year, representing a 14% increase from the year before and the largest annual growth since 2000, IRENA said in a report. To meet the target, the world will have to add renewables capacity at a minimum 16.4% rate annually to 2030. However, if last year's 14% increase rate continues, the 11 TW target will be 1.5 TW short. Further reading: World Will Miss Target of Tripling Renewable Electricity Generation By 2030, IEA Says.

The western United States is experiencing an unprecedented heat wave, with multiple states breaking temperature records in recent weeks. Palm Springs, California has been particularly affected, shattering its all-time high temperature record when it reached 124F (51.1C) last Friday. The National Weather Service reported that Palm Springs hit 122F (50C) on July 8, the highest temperature ever recorded for that date.

This extreme heat is not isolated to Palm Springs, as Arizona, Oregon, and Nevada have also seen record-breaking temperatures. Climate scientists attribute this intensifying heat to human-caused climate change. The heat wave comes as global temperatures continue to rise. According to the European Union's Copernicus Climate Change Service, the world has been at or above the 1.5 degree Celsius threshold for 12 straight months as of June, a key marker in climate change discussions.

An anonymous reader shares a report: On Wednesday, Amazon claimed that it reached its goal of sourcing all its power from clean energy sources in the past year. If taken at face value, the announcement would mean it hit the milestone seven years ahead of schedule, which would be a monumental achievement. But environmental experts speaking to The New York Times, including a group of concerned Amazon employees, warn that the company is "misleading the public by distorting the truth." The company's claim of achieving 100 percent clean electricity is based in part on billion-dollar investments in over 500 solar and wind initiatives. The company's logic is that the energy these projects generate equals the electricity its data centers consume -- ergo, even Steven. But the renewable energy sources it uses for those calculations are fed into a general power grid, not exclusively into Amazon's operations. Environmental experts caution that the company is using "accounting and marketing to make itself look good," as The New York Times put it.

An anonymous reader quotes a report from The Guardian: Air pollution exposure can significantly decrease the chance of a live birth after IVF treatment, according to research that deepens concern about the health impacts of toxic air on fertility. Pollutant exposure has previously been linked to increased miscarriage rates and preterm births, and microscopic soot particles have been shown to travel through the bloodstream into the ovaries and the placenta. The latest work suggests that the impact of pollution begins before conception by disrupting the development of eggs. "We observed that the odds of having a baby after a frozen embryo transfer were more than a third lower for women who were exposed to the highest levels of particulate matter air pollution prior to egg collection, compared with those exposed to the lowest levels," said Dr Sebastian Leathersich, a fertility specialist and gynaecologist from Perth who is due to present the findings on Monday at the European Society of Human Reproduction and Embryology annual meeting in Amsterdam. [...]

The study analyzed fertility treatments in Perth over an eight-year period, including 3,659 frozen embryo transfers from 1,836 patients, and tracked whether outcomes were linked to the levels of fine particulate matter, known as PM10. The overall live birthrate was about 28% per transfer. However, the success rates varied in line with exposure to pollutants in the two weeks leading up to egg collection. The odds of a live birth decreased by 38% when comparing the highest quartile of exposure to the lowest quartile. "These findings suggest that pollution negatively affects the quality of the eggs, not just the early stages of pregnancy, which is a distinction that has not been previously reported," Leathersich said. The team now plan to study cells directly to understand why pollutants have a negative effect. Previous work has shown that the microscopic particles can damage DNA and cause inflammation in tissues. The report notes that the link between air pollution and live birth "was apparent despite excellent overall air quality during the study period, with PM10 and PM2.5 levels exceeding WHO guidelines on just 0.4% and 4.5% of the study days."

It adds: "Australia is one of just seven countries that met the WHO's guidelines in 2023, and this study is the latest to show evidence of harm even at relatively low levels of pollution."

The study has been published in the journal Human Reproduction.

The world has baked for 12 consecutive months in temperatures 1.5C (2.7F) greater than their average before the fossil fuel era, new data shows. Temperatures between July 2023 and June 2024 were the highest on record, scientists found, creating a year-long stretch in which the Earth was 1.64C hotter than in preindustrial times. From a report: The findings do not mean world leaders have already failed to honour their promises to stop the planet heating 1.5C by the end of the century -- a target that is measured in decadal averages rather than single years -- but that scorching heat will have exposed more people to violent weather. A sustained rise in temperatures above this level also increases the risk of uncertain but catastrophic tipping points.

Carlo Buontempo, director of the Copernicus Climate Change Service, which analysed the data, said the results were not a statistical oddity but a "large and continuing shift" in the climate. "Even if this specific streak of extremes ends at some point, we are bound to see new records being broken as the climate continues to warm," he said. "This is inevitable unless we stop adding greenhouse gases into the atmosphere and the oceans." Copernicus, a scientific organisation that belongs to the EU's space programme, uses billions of measurements from satellites, ships, aircraft and weather stations to track key climate metrics. It found June 2024 was hotter than any other June on record and was the 12th month in a row with temperatures 1.5C greater than their average between 1850 and 1900. Because temperatures in some months had "relatively small margins" above 1.5C, the scientists said, datasets from other climate agencies may not confirm the 12-month temperature streak.

They lived 378 days in a "mock Mars habitat" in Houston, reports Engadget. But today the four volunteers for NASA's yearlong simulation will finally emerge from their 1,700-square-foot habitat at the Johnson Space Center that was 3D-printed from materials that could be created with Martian soil.

And you can watch the "welcome home" ceremony's livestream starting at 5 p.m. EST on NASA TV (also embedded in Engadget's story). More det ails from NASA: For more than a year, the crew simulated Mars mission operations, including "Marswalks," grew and harvested several vegetables to supplement their shelf-stable food, maintained their equipment and habitat, and operated under additional stressors a Mars crew will experience, including communication delays with Earth, resource limitations, and isolation.
One of the mission's crew members told the Houston Chronicle they were "very excited to go back to 'Earth,' but of course there is a bittersweet aspect to it just like any time you reach the completion of something that has dominated one's life for several years."

Various crew members left behind their children or long-term partner for this once-in-a-lifetime experience, according to an earlier article, which also notes that NASA is paying the participants $10 per hour "for all waking hours, up to 16 hours per day. That's as much as $60,480 for the 378-day mission."

Engadget points out there are already plans for two more one-year "missions" — with the second one expected to begin next spring...

I'm curious. Would any Slashdot readers be willing to spend a year in a mock Mars habitat?

General Motors will pay nearly $146 million in penalties to the U.S. government, reports the Associated Press, "because 5.9 million of its older vehicles do not comply with emissions and fuel economy standards." The National Highway Traffic Safety Administration said in a statement Wednesday that certain GM vehicles from the 2012 through 2018 model years did not comply with federal fuel economy requirements. The penalty comes after the Environmental Protection Agency said its testing showed the GM pickup trucks and SUVs emit over 10% more carbon dioxide on average than GM's initial compliance testing claimed.

The EPA says the vehicles will remain on the road and cannot be repaired. The GM vehicles on average consume at least 10% more fuel than the window sticker numbers say, but the company won't be required to reduce the miles per gallon on the stickers, the EPA said... GM said in a statement that it complied with all regulations in pollution and mileage certification of its vehicles. The company said it is not admitting to any wrongdoing nor that it failed to comply with the Clean Air Act...

The enforcement action involves about 4.6 million full-size pickups and SUVs and about 1.3 million midsize SUVs, the EPA said. The affected models include the Chevy Tahoe, Cadillac Escalade and Chevy Silverado. About 40 variations of GM vehicles are covered. GM will be forced to give up credits used to ensure that manufacturers' greenhouse gas emissions are below the fleet standard for emissions that applies for that model year, the EPA said. In a quarterly filing with the Securities and Exchange Commission, GM said it expects the total cost to resolve the matter will be $490 million. Because GM agreed to address the excess emissions, EPA said it was not necessary to make a formal determination regarding the reasons for the excess pollution.
According to the article, David Cooke, senior vehicles analyst for the Union of Concerned Scientists, "said it's possible that GM owners could sue the company because they are getting lower gas mileage than advertised."

The article also notes that in 2014, Hyundai and Kia "entered into a settlement in which they had to pay a $100 million civil penalty to end a two year investigation into overstated gas mileage on window stickers of 1.2 million vehicles."