Longtime Slashdot reader SonicSpike shares a report from Reuters: Aerospace and defense company Northrop Grumman is working with SpaceX [...] on a classified spy satellite project already capturing high-resolution imagery of the Earth, according to people familiar with the program. The program, details of which were first reported by Reuters last month, is meant to enhance the U.S. government's ability to track military and intelligence targets from low-Earth orbits, providing high-resolution imagery of a kind that had traditionally been captured mostly by drones and reconnaissance aircraft. The inclusion of Northrop Grumman, which has not been previously reported, reflects a desire among government officials to avoid putting too much control of a highly-sensitive intelligence program in the hands of one contractor, four people familiar with the project told Reuters. 'It is in the government's interest to not be totally invested in one company run by one person,' one of the people said.

It's unclear whether other contractors are involved at present or could join the project as it develops. Northrop Grumman is providing sensors for some of the SpaceX satellites, the people familiar with the project told Reuters. Northrop Grumman, two of the people added, will test those satellites at its own facilities before they are launched. At least 50 of the SpaceX satellites are expected at Northrop Grumman facilities for procedures including testing and the installation of sensors in coming years, one of the people said. In March, Reuters reported that the National Reconnaissance Office, or NRO, in 2021 awarded a $1.8 billion contract to SpaceX for the classified project, a planned network of hundreds of satellites. So far, the people familiar with the project said, SpaceX has launched roughly a dozen prototypes and is already providing test imagery to the NRO, an intelligence agency that oversees development of U.S. spy satellites.

An anonymous reader shares a report: A storm hit the United Arab Emirates and Oman this week bringing record rainfall that flooded highways, inundated houses, grid-locked traffic and trapped people in their homes. [...] In the UAE, a record 254 millimetres (10 inches) of rainfall was recorded in Al Ain, a city bordering Oman. It was the largest ever in a 24-hour period since records started in 1949. Rainfall is rare in the UAE and elsewhere on the Arabian Peninsula, that is typically known for its dry desert climate. Summer air temperatures can soar above 50 degrees Celsius. But the UAE and Oman also lack drainage systems to cope with heavy rains and submerged roads are not uncommon during rainfall.

Following Tuesday's events, questions were raised whether cloud seeding, a process that the UAE frequently conducts, could have caused the heavy rains. Cloud seeding is a process in which chemicals are implanted into clouds to increase rainfall in an environment where water scarcity is a concern. The UAE, located in one of the hottest and driest regions on earth, has been leading the effort to seed clouds and increase precipitation. But the UAE's meteorology agency told Reuters there were no such operations before the storm. The huge rainfall was instead likely due to a normal weather system that was exacerbated by climate change, experts say. A low pressure system in the upper atmosphere, coupled with low pressure at the surface had acted like a pressure 'squeeze' on the air, according to Esraa Alnaqbi, a senior forecaster at the UAE government's National Centre of Meteorology. That squeeze, intensified by the contrast between warmer temperatures at ground level and colder temperatures higher up, created the conditions for the powerful thunderstorm, she said.

Average incomes will fall by almost a fifth within the next 26 years as a result of the climate crisis, according to a study that predicts the costs of damage will be six times higher than the price of limiting global heating to 2C. From a report: Rising temperatures, heavier rainfall and more frequent and intense extreme weather are projected to cause $38tn of destruction each year by mid-century, according to the research, which is the most comprehensive analysis of its type ever undertaken, and whose findings are published in the journal Nature. The hefty toll -- which is far higher than previous estimates -- is already locked into the world economy over the coming decades as a result of the enormous emissions that have been pumped into the atmosphere through the burning of gas, oil, coal and trees.

This will inflict crippling losses on almost every country, with a disproportionately severe impact on those least responsible for climate disruption, further worsening inequality. The paper says the permanent average loss of income worldwide will be 19% by 2049. In the United States and Europe the reduction will be about 11%, while in Africa and south Asia it will be 22%, with some individual countries much higher than this. "It's devastating," said Leonie Wenz, a scientist at the Potsdam Institute for Climate Impact Research and one of the authors of the study. "I am used to my work not having a nice societal outcome, but I was surprised by how big the damages were. The inequality dimension was really shocking."

NASA has confirmed that a piece of metal that tore through a Florida home last month was space junk from the International Space Station. NBC News reports: The agency confirmed Monday that the 1.6-pound object was debris from a cargo pallet that had been intentionally released from the space station three years ago. The pallet, packed with aging batteries, was supposed to burn up harmlessly in Earth's atmosphere, but a piece survived -- the piece that smashed into a house in Naples, Florida, on March 8.

WINK News, a CBS News affiliate in southwestern Florida, first reported the incident. Naples resident Alejandro Otero told the outlet that the object crashed through the roof and two floors of his home. Otero was not home at the time, he told WINK News, but the metal object nearly hit his son, who was two rooms away. In a blog post about the incident, NASA said it had analyzed the object at the Kennedy Space Center in Florida and confirmed that it was part of the equipment used to mount the batteries on the cargo pallet.

The piece of space junk is roughly cylindrical in shape and is about 4-inches tall and 1.6-inches wide. NASA said agency staff studied the object's features and metal composition and matched it to the hardware that had been jettisoned from the space station in 2021. At that time, new lithium-ion batteries had recently been installed at the space station, so the old nickel hydrogen batteries were packed up for disposal. The space station's robotic arm released the 5,800-pound cargo pallet containing the batteries over the Pacific Ocean, as the outpost orbited 260 miles above the Earth's surface, according to NASA. NASA said it will perform a detailed investigation of the latest debris incident to determine how the object withstood the extreme trip through the atmosphere.

SonicSpike shares a report: The quest to return rock materials from Mars to Earth to see if they contain traces of past life is going to go through a major overhaul. The US space agency says the current mission design can't return the samples before 2040 on the existing funds and the more realistic $11bn needed to make it happen is not sustainable. Nasa is going to canvas for cheaper, faster "out of the box" ideas. It hopes to have a solution on the drawing board later in the year.

Returning rock samples from Mars is regarded as the single most important priority in planetary exploration, and has been for decades. Just as the Moon rocks brought home by Apollo astronauts revolutionised our understanding of early Solar System history, so materials from the Red Planet are likely to recast our thinking on the possibilities for life beyond Earth.

The National Oceanic and Atmospheric Administration on Monday declared that Earth is in the midst of a "4th global coral bleaching event" that's been documented over the last 14 months in every major ocean basin, including off Florida in the United States, in Australia's Great Barrier Reef and in the South Pacific. "As the world's oceans continue to warm, coral bleaching is becoming more frequent and severe," said Derek Manzello, a coral reef ecologist who coordinates NOAA's Coral Reef Watch Program, in a news release. "When these events are sufficiently severe or prolonged, they can cause coral mortality, which hurts the people who depend on the coral reefs for their livelihoods." NBC News reports: Corals are critical ecosystems that support a vast array of fish and aquatic species, which help feed coastal communities and attract tourists. The economic value of reefs is estimated at $2.7 trillion per year, according to a 2020 report from the Global Coral Reef Monitoring Network. "They protect our coastline. They offer protection from storms and hurricanes. They have a great value for our economy and safety," [Ana Palacio, an assistant scientist at the Cooperative Institute for Marine and Atmospheric Studies, a research institute that is based at the University of Miami in partnership with NOAA] said.

In Florida, as sea surface temperatures spiked, bleaching started early in the season, experts said. "Normally, bleaching will be observed in the Northern Hemisphere around August and September. We started to observe bleaching in July last year," said Phanor Montoya-Maya, a marine biologist with the Coral Restoration Foundation, an organization that collects, restores and repopulates corals. Palacio said the region saw widespread mortality of elkhorn and staghorn corals, two species that have been the focus of restoration efforts. "In some locations, about 20% of those populations survived," Palacio said of restored corals. "We're concentrating our hope on why those corals survived and what they can tell us about resistance and how corals can be more resilient."

The last global coral bleaching event happened in 2014 and lasted until 2017. More than 56% of global reef areas saw temperatures that could cause bleaching during that time period. In an email on Monday, Manzello said that 54% of the world's coral reef areas had experienced bleaching-level heat stress in the past year and that the event was poised to become the worst bleaching event in history. "The percentage of reef areas experiencing bleaching-level heat stress has been increasing by roughly 1% per week," Manzello said. "It is likely that this event will surpass the previous peak."

Montoya-Maya said a bleaching alert is already in effect in Florida, even earlier than last year. He said the Coral Restoration Foundation was preparing for a busy summer responding to another bleaching event. The natural pattern of El Nino has begun to dissipate and NOAA's Climate Prediction Center estimates there is a 60% chance La Niaa develops this summer, which could help cool Atlantic waters and allow some corals to recover, at least temporarily.

An anonymous reader shared this report from the Los Angeles Times: A network of air monitors installed in Northern California has provided scientists with some of the first measurable evidence quantifying how much electric vehicles are shrinking the carbon footprint of a large urban area. Researchers from UC Berkeley set up dozens of sensors across the Bay Area to monitor planet-warming carbon dioxide, the super-abundant greenhouse gas produced when fossil fuels are burned. Between 2018 and 2022, the region's carbon emissions fell by 1.8% each year, which the Berkeley researchers concluded was almost exclusively owed to drivers switching to electric vehicles, according to a study published in the journal Environmental Science & Technology.

In that time, Californians purchased about 719,500 zero-emission or plug-in hybrid vehicles, more than triple the amount compared to the previous five years, according to the California Department of Energy. The Bay Area also had a higher rate of electric vehicle adoption than the state as a whole.

While the findings confirm the state's transition to zero-emission vehicles is substantially lowering carbon emissions, it also reveals these reductions are still not on pace to meet the state's ambitious climate goals. Emissions need to be cut by around 3.7% annually, or nearly twice the rate observed by the monitors, according to Ronald Cohen, UC Berkeley professor of chemistry. Although cars and trucks are the state's largest source of carbon emissions, it underscores the need to deploy zero-emission technology inside homes and for the power grid.

"I think what we see right now is evidence of strong success in the transportation sector," Cohen said. "We're going to need equally strong success in home and commercial heating, and in the [industrial] sources. We don't yet see significant movement in those, but policy pushing on those is not as far ahead as policy on electric vehicles." Although cities only cover roughly 3% of global surface area, they produce about 70% of carbon emissions.

Meanwhile, in Southern California, nonprofit news site Canary Media reports that an old gas combustion plant is being replaced by a "power bank" named Nova.

It's expected to store "more electricity than all but one battery plant currently operating in the U.S." The billion-dollar project, with 680 megawatts and 2,720 megawatt-hours, will help California shift its nation-leading solar generation into the critical evening and nighttime hours, bolstering the grid against the heat waves that have pushed it to the brink multiple times in recent years... The town of Menifee gets to move on from the power plant exhaust that used to join the smog flowing from Los Angeles... And the grid gets a bunch more clean capacity that can, ideally, displace fossil fuels...

Moreover, [the power bank] represents Calpine's grand arrival in the energy storage market, after years operating one of the biggest independent gas power plant fleets in the country alongside Vistra and NRG... Federal analysts predict 2024 will be the biggest-ever year for grid battery installations across the U.S., and they highlighted Calpine's project as one of the single largest projects. The 620 megawatts the company plans to energize this year represent more than 4% of the industry's total expected new additions.

Many of these new grid batteries will be built in California, which needs all the dispatchable power it can get to meet demand when its massive solar fleet stops producing, and to keep pace with the electrification of vehicles and buildings. The Menifee Power Bank, and the other gigawatts worth of storage expected to come online in the state this year, will deliver much-needed reinforcement.
The company says it's planning "a portfolio" of 2,000 megawatts of California battery capacity.

But even this 680-megawatt project consists of 1,096 total battery containers holding 26,304 battery modules (or a total of 3 million cells), "all manufactured by Chinese battery powerhouse BYD, according to Robert Stuart, an electrical project manager with Calpine. That's enough electricity to supply 680,000 homes for four hours before it runs out." What's remarkable is just how quickly the project came together. Construction began last August, and is expected to hit 510 megawatts of fully operational capacity over the course of this summer, even as installation continues on other parts of the plant. Erecting a conventional gas plant of comparable scale would have taken three or four years of construction labor, due to the complexity of the systems and the many different trades required for it, Stuart told Canary Media... That speed and flexibility makes batteries a crucial solution as utilities across the nation grapple with a spike in expected electricity demand unlike anything seen in the last few decades.
The article notes a 2013 Caifornia policy mandating battery storage for its utility companies, which "kicked off a decade-long project to will an energy storage market into existence through methodical policies and regulations, and the knock-on effects of building the nation's foremost solar fleet." Those energy storage policies succeeded in jumpstarting the modern grid battery market: California leads the nation with more than 7 gigawatts of batteries installed as of last year (though Texas is poised to overtake California in battery installations this year, on the back of no particular policy effort but a general openness to building energy projects)... California's interlocking climate regulations effectively rule out new gas construction. The state's energy roadmap instead calls for massive expansion of battery capacity to shift the ample amounts of solar generation into the evening peaks.
"These trends, along with the falling price of batteries and maturing business model for storage, nudged Calpine to get into the battery business, too."

After nearly 11 years as CNN's space correspondent, Miles O'Brien found himself in 2003 at the Kennedy Space Center in Florida covering the launch of the space shuttle Columbia: As part of the post-launch routine, NASA began sharing several replays of the launch from various cameras trained on the vehicle. And that was when we saw it. Producer Dave Santucci called me into our live truck, and said, "You got to look at this." It was kind of a grainy image of what looked like a puff of smoke, as if someone dropped a bag of flour on the ground and it broke open. We played it over and over again, and it did not look good at all. The giant orange fuel tank was filled with super cold liquid hydrogen and oxygen, so it was enveloped in insulating foam. A big piece of the foam had broken away near a strut called the "bipod," striking the leading edge of the orbiter's left wing. It was made of reinforced carbon to protect the aluminum structure of the spacecraft from the searing heat of re-entry from space.

I reached out to some of my sources inside the shuttle program. Everyone had seen it, of course, but the people I spoke with cautioned me not to worry. The foam was very light, and it had fallen off on earlier missions and nothing of concern had happened as a result... I wish I hadn't taken my eye off the ball. Space was my beat, and I was uniquely positioned to put this concerning event into the public domain. Like NASA's leadership, I went through a process of convincing myself that it was going to be okay. But I had this sinking feeling. It didn't feel right. A spacecraft re-entering the atmosphere at 17,500 miles an hour — much faster than a rifle bullet — is enveloped in a glowing inferno of plasma...

[As it returned to earth 16 days later] the communication between the ground and the orbiter became non-routine. Producers in the control room realized the gravity of the situation, and we cut to a commercial break to get me off the couch. As I was making my way across the newsroom, I started heaving. I knew in an instant that they were all gone. There was no survivable scenario. I was sickened. It was like a body blow. Somehow I got my act together and started talking. I felt like it was my responsibility to mention the foam strike, to get the information out there to the public. About an hour after Columbia had disintegrated, I shared with a huge global audience what I knew... "That bipod is the place where they think a little piece of foam fell off and hit the leading edge of that wing."

During the mission, I could have easily done a story about the foam strike, spreading the word that some NASA engineers believed there may be some reason for concern. What if I had done that? It might have made a difference.
"A rescue mission would not have been impossible," the article concludes, "and I feel certain that if NASA managers saw that gaping hole in Columbia's wing, they would've tried.

"We will never know for sure, but I do know how so many of us on the ground failed to do our jobs during that mission. It still haunts me."


CNN broadcasts the last two episodes of its four-part series Space Shuttle Columbia: The Final Flight tonight at 9 p.m. EST (time-delayed on the west coast until 9 p.m.PST). CNN's web site offers a "preview" of its live TV offerings here.

The news episodes (along with past episodes) will also be available on-demand starting Monday — "for pay TV subscribers via CNN.com, CNN connected TV and mobile apps." It's also available for purchase on Amazon Prime.

An anonymous reader shared this report from ScienceAlert: The Fermi Paradox is the discrepancy between the apparent high likelihood of advanced civilizations existing and the total lack of evidence that they do exist. Many solutions have been proposed for why the discrepancy exists. One of the ideas is the 'Great Filter.' The Great Filter is a hypothesized event or situation that prevents intelligent life from becoming interplanetary and interstellar and even leads to its demise....

[H]ow about the rapid development of AI?

A new paper in Acta Astronautica explores the idea that Artificial Intelligence becomes Artificial Super Intelligence (ASI) and that ASI is the Great Filter. The paper's title is "Is Artificial Intelligence the Great Filter that makes advanced technical civilizations rare in the universe?"
"Upon reaching a technological singularity, ASI systems will quickly surpass biological intelligence and evolve at a pace that completely outstrips traditional oversight mechanisms, leading to unforeseen and unintended consequences that are unlikely to be aligned with biological interests or ethics," the paper explains... The author says their projects "underscore the critical need to quickly establish regulatory frameworks for AI development on Earth and the advancement of a multiplanetary society to mitigate against such existential threats."

"The persistence of intelligent and conscious life in the universe could hinge on the timely and effective implementation of such international regulatory measures and

Popular Science reports that early last week, researchers at the U.S. Energy Department's Princeton Plasma Physics Laboratory revealed their new "MUSE" stellarator — "a unique fusion reactor that uses off-the-shelf and 3D-printed materials to contain its superheated plasma."

The researchers' announcement says the technique suggests "a simple way to build future devices for less cost and allow researchers to test new concepts for future fusion power plants." Stellarators typically rely on complicated electromagnets that have complex shapes and create their magnetic fields through the flow of electricity. Those electromagnets must be built precisely with very little room for error, increasing their cost. However, permanent magnets, like the magnets that hold art to refrigerator doors, do not need electric currents to create their fields. They can also be ordered off the shelf from industrial suppliers and then embedded in a 3D-printed shell around the device's vacuum vessel, which holds the plasma.

"MUSE is largely constructed with commercially available parts," said Michael Zarnstorff, a senior research physicist at PPPL. "By working with 3D-printing companies and magnet suppliers, we can shop around and buy the precision we need instead of making it ourselves." The original insight that permanent magnets could be the foundation for a new, more affordable stellarator variety came to Zarnstorff in 2014. "I realized that even if they were situated alongside other magnets, rare-earth permanent magnets could generate and maintain the magnetic fields necessary to confine the plasma so fusion reactions can occur," Zarnstorff said, "and that's the property that makes this technique work." [...]

In addition to being an engineering breakthrough, MUSE also exhibits a theoretical property known as quasisymmetry to a higher degree than any other stellarator has before. It is also the first device completed anywhere in the world that was designed specifically to have a type of quasisymmetry known as quasiaxisymmetry. Conceived by physicist Allen Boozer at PPPL in the early 1980s, quasisymmetry means that although the shape of the magnetic field inside the stellarator may not be the same around the physical shape of the stellarator, the magnetic field's strength is uniform around the device, leading to good plasma confinement and higher likelihood that fusion reactions will occur. "In fact, MUSE's quasisymmetry optimization is at least 100 times better than any existing stellarator," Zarnstorff said.

"The fact that we were able to design and build this stellarator is a real achievement," said Tony Qian, a graduate student in the Princeton Program in Plasma Physics, which is based at PPPL.
Also covered by Gizmodo. Thanks to Slashdot reader christoban for sharing the news.

Aboard the deck of a World War II-era aircraft carrier, University of Washington scientists flicked the switch on a glorified snow-making machine," reports the Seattle Times. They describe the scientists "blasting a plume of saline spray off the coast of Alameda, California... trying to perfect a shot of salty particles that would make clouds better at reflecting sunlight back toward space, and help cool the Earth.

"It's called marine cloud brightening." Compressed air was pumped at hundreds of pounds per square inch through a nozzle full of a salty mix with a similar composition to seawater housed in an apparatus similar to a snow-making machine. The New York Times reported the machine produced a deafening hiss, releasing a fine mist that traveled hundreds of feet through the air. The scientists wanted to see if the machine could generate a consistent spray of the right size salt aerosols, taking samples downwind with instruments mounted on scissor lifts, commonly used in construction.
"This study is not yet large enough to affect local weather," the article points out. Yet "the idea of interfering with nature is so contentious, organizers of Tuesday's test kept the details tightly held, concerned that critics would try to stop them," reported the New York Times.

If it works, the next stage would be to aim at the heavens and try to change the composition of clouds above the Earth's oceans..."I hope, and I think all my colleagues hope, that we never use these things, that we never have to," said Sarah Doherty, an atmospheric scientist at the University of Washington and the manager of its marine cloud brightening program. She said there were potential side effects that still needed to be studied, including changing ocean circulation patterns and temperatures, which might hurt fisheries. Cloud brightening could also alter precipitation patterns, reducing rainfall in one place while increasing it elsewhere. But it's vital to find out whether and how such technologies could work, Doherty said, in case society needs them. And no one can say when the world might reach that point.
More from the Seattle Times: Some scientists warn that human influence on natural phenomena has rarely yielded the desired outcome, and often comes with unintended consequences. But, as the fossil-fueled world hurtles toward the internationally approved global warming limit to avoid the worst impacts of climate change, some argue there's a need to study backup plans.

"When I started graduate school in 1995, climate change, global warming was on the horizon, but there was still time to do something like reduce emissions at a scale that would allow us to avoid serious climate disruption," program manager Sarah Doherty said in an interview. "I think it's come to the point where the science community recognizes that a fairly significant degree of climate disruption and damage and suffering is pretty inevitable...." Doherty and the team are not advocating that anyone try cloud brightening now, but instead are hoping to develop a foundation for research that future decision-makers could rely on if they are evaluating geoengineering as a means of reducing suffering.
More info here from Politico and San Francisco Chronicle.

The New York Times notes that Bill Gates began funding early research in 2006.

Andrew Jones reports via IEEE Spectrum: The European Space Agency will launch a mission late this year to demonstrate precision formation flying in orbit to create artificial solar eclipses. In a press conference last week, the agency announced details of the mission and the technology the orbiters will use to pull off its exquisitely-choreographed maneuvers. ESA's Proba-3 (PRoject for On-Board Autonomy) consists of a pair of spacecraft: a 300-kilogram Coronagraph spacecraft and a 250-kilogram Occulter. The pair are now slated to launch on an Indian PSLV rocket in September and ultimately enter a highly elliptical, 600-by-60,530-kilometer orbit. The aim, the agency says, is to move the separate spacecraft to some 144 meters apart, with the Occulter, as a disc, blocking out the sun.

Achieving this formation will allow the Coronagraph to study our star's highly ionized, extremely hot atmosphere -- but also demonstrate the technology as a precursor for more ambitious, future, formation-flying endeavors. [...] ESA has science objectives for Proba-3, using observations made in space to study solar astrophysics without any intervention of the Earth's atmosphere. The agency's Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun (ASPIICS) coronagraph will help to discern why the solar corona is significantly hotter than the Sun itself. This could further our understanding of the Sun and assist solar weather predictions. However, it is the precision formation flying that Proba-3 aims to demonstrate which could help unlock future breakthroughs. [...]

Precisely-controlled Occulter spacecraft could be used with space telescopes to block light from a star in order to directly detect potential orbiting planets, while a constellation of spacecraft can, through interferometry, create large-scale observatories, achieving large apertures and long focal lengths than possible with large solo satellites. Further applications include Earth observation, space-based gravitational wave detection, and a range of missions in which two or more spacecraft need to interact, such as rendezvous, docking, and in-orbit servicing.

China is rapidly advancing its space capabilities to challenge the United States' dominance in space, as evidenced by its significant increase in on-orbit intelligence and reconnaissance satellites and the development of sophisticated counterspace weapons. Space.com reports: "Frankly, China is moving at a breathtaking speed. Since 2018, China has more than tripled their on-orbit intelligence, surveillance and reconnaissance satellites," Gen. Stephen Whiting, commander of U.S. Space Command, said here on Tuesday, during a talk at the 39th Space Symposium. "And with these systems, they've built a kill web over the Pacific Ocean to find, fix, track and, yes, target United States and allied military capabilities," he added. And that's not all. China has also "built a range of counterspace weapons, from reversible jamming all the way up to kinetic hit-to-kill direct-ascent and co-orbital ASATs," Whiting said.

Indeed, China demonstrated direct-ascent ASAT, or anti-satellite, weapon technology back in January 2007, when it destroyed one of its defunct weather satellites with a missile. That test was widely decried as irresponsible, for it generated thousands of pieces of debris, many of which are still cluttering up Earth orbit. Such activities show that China is now treating space as a war-fighting domain, Whiting said. And so, he added, is Russia, which has also conducted ASAT tests recently, including a destructive one in November 2021. Russia has also been aggressively building out its orbital architecture; since 2018, the nation has more than doubled its total number of active satellites, according to Whiting. The U.S. government has taken notice of these trends.

"We are at a pivotal moment in history," Troy Meink, principal deputy director of the National Reconnaissance Office, which builds and operates the United States' fleet of spy satellites, said during a different talk on Tuesday here at the symposium. "For the first time in decades, U.S. leadership in space and space technology is being challenged," Meink added. "Our competitors are actively seeking ways to threaten our capabilities, and we see this every day." The U.S. must act if it wishes to beat back this challenge, Meink and Whiting stressed; it cannot rely on the inertia of past success to do the job. For example, Meink highlighted the need to innovate with the nation's reconnaissance satellites, to make them more numerous, more agile and more resilient. U.S. Under Secretary of Defense for Research and Engineering Heidi Shyu also emphasized the importance of increasing resilience, a goal that she said could be achieved by diversifying the nation's space capabilities. "We must assess ways to incorporate radiation-hardened electronics, novel orbits, varied communication pathways, advancements in propulsion technologies and increased cooperation with our allies," Shyu said in another talk on Tuesday at the symposium.

Sierra Space CEO Tom Vice told Yahoo Finance it plans to go public within the next 18 months at a valuation of $5.3 billion. Since being spun out of defense contractor Sierra Nevada Corporation in 2021, the company has "placed its bets on building out the growing space economy, from developing rocket propulsion technology to a commercial space station with Blue Origin." From the report: Its ambitions have fueled the development of its cargo space plane, the Dream Chaser, set to have its inaugural mission to the International Space Station (ISS) in the second half of this year. Built to land on any commercial runway, the plane will lower the barrier to entry into low-earth orbit and open up business opportunities, Vice said. "Since the 1960s, every science experiment or human being that's come back to earth from space, even today, is still landing in a capsule in the ocean," he said. "We think changing and revolutionizing the way that we bring things back from space, both humans and cargo, and landing [the spacecraft] back at a commercial runway will completely accelerate the new space economy."

"We believe that the next big breakthrough products in oncology, longevity, and industrialized components like glass will be produced in low Earth orbit," Vice said, noting that many of those opportunities are likely to come from the development of commercial space stations to replace the decades-old ISS. Sierra Space has partnered with Blue Origin to build out the Orbital Reef, a commercially owned and operated space station, though recent reports have hinted at tension between the corporate partners. "We're transitioning from decades of government-run space stations with just a handful of government-trained astronauts to the full commercialization of low Earth orbit," Vice said. "We think that's going to create, we believe, probably the most profound industrial revolution and grow that space economy well over a trillion dollars by 2040."

An anonymous reader quotes a report from The Guardian: It was billed as a glass-walled city of the future, an ambitious centerpiece of the economic plan backed by Crown Prince Mohammed bin Salman to transition Saudi Arabia away from oil dependency. Now, however, plans for the mirror-clad desert metropolis called the Line have been scaled down and the project, which was envisaged to stretch 105 miles (170km) is expected to reach just a mile and a half by 2030. Dreamed up as a linear city that would eventually be home to about 9 million people on a footprint of just 13 sq miles, the Line is part of a wider Neom project. Now at least one contractor has begun dismissing workers. The scaling down of Prince Mohammed's most grandiose project was reported by Bloomberg, which said it had seen documents relating to the project.

According to the European Union, Earth has reached its warmest March on record, capping a 10-month streak in which every month set a new temperature record. Reuters reports: Each of the last 10 months ranked as the world's hottest on record, compared with the corresponding month in previous years, the EU's Copernicus Climate Change Service (C3S) said in a monthly bulletin. The 12 months ending with March also ranked as the planet's hottest ever recorded 12-month period, C3S said. From April 2023 to March 2024, the global average temperature was 1.58 degrees Celsius above the average in the 1850-1900 pre-industrial period.

C3S' dataset goes back to 1940, which the scientists cross-checked with other data to confirm that last month was the hottest March since the pre-industrial period. Already, 2023 was the planet's hottest year in global records going back to 1850. El Nino peaked in December-January and is now weakening, which may help to break the hot streak toward the end of the year. But despite El Nino easing in March, the world's average sea surface temperature hit a record high, for any month on record, and marine air temperatures remained unusually high, C3S said. "The main driver of the warming is fossil fuel emissions," said Friederike Otto, a climate scientist at Imperial College London's Grantham Institute. Failure to reduce these emissions will continue to drive the warming of the planet, resulting in more intense droughts, fires, heatwaves and heavy rainfall, Otto said.

Fairphone, the Dutch smartphone maker known for its user-repairable smartphones, is bringing its ultra-repairable design philosophy to their "Fairbuds" wireless earbuds. Liliputing reports: The Fairbuds have the sort of features we've come to expect from premium earbuds. They're noise-cancelling Bluetooth 5.3 earbuds with support for wind noise reduction and an environmental noise-cancelling feature that sets noise reduction depending on your environment. Fairphone's earbuds have six microphones, 11mm drivers, and an IP54 rating for water (and sweat) resistance. They also support multipoint connectivity, which means you can connect the earbuds to two different devices at the same time (like your phone and your laptop).

The earbuds offer up to 6 hours of battery life and they come with a charging case that gives you another 20 hours of use between charges. And Fairphone offers iOS and Android apps that let you adjust EQ, install firmware updates, and make other changes. Other features include automatic play and pause when the Fairbuds are removed from your ears, capacitive touch controls, and three different ear tips sizes included in the box.

But the key thing that makes these earbuds different from the competition is that they're designed to be repairable rather than replaceable. Lose just one earbud? Fairphone will let you buy a single earbud without paying again for a full set with a case. Is your battery life degrading a few years after purchase? Fairphone will sell battery replacements and let you swap out the batteries in your earbuds or charging case. All told, the company offers seven repairable/replaceable components for the Fairbuds. The company also offers a 3-year warranty for its new Fairbuds and notes that they're manufactured using:

- 70% of all materials used in production are fair and recycled (fair = ethically sourced).
- 100% of rare earth elements used are recycled.
- Plastics used in the Fairbuds and their charging case are recycled. The Fairbuds are currently only available in Europe for 149 euros.

England could produce 13 times more renewable energy than it does now, while using less than 3% of its land, analysis has found. The Guardian: Onshore wind and solar projects could provide enough electricity to power all the households in England two and a half times over, the research by Exeter University, commissioned by Friends of the Earth (FoE), suggested. Currently, about 17 terawatt hours of electricity a year comes from homegrown renewables on land. But there is potential for 130TWh to come from solar panels, and 96TWh from onshore wind. These figures are reached by only taking into account the most suitable sites, excluding national parks, areas of outstanding natural beauty, higher grade agricultural land and heritage sites.

Some commentators have argued that solar farms will reduce the UK's ability to grow its own food, but the new analysis suggests there is plenty of land that can be used without impairing agricultural production. More land is now taken up by golf courses than solar farms, and developers can be required to enhance biodiversity through simple measures such as maintaining hedgerows and ponds. Onshore windfarms were in effect banned in 2015 by the then prime minister, David Cameron. Rishi Sunak last year claimed to make moves towards lifting the ban, through small changes to the planning regulations, but campaigners say they were ineffectual and real planning reform is needed. No plans were submitted for new windfarms in England last year, and few new developments are coming forward, despite high gas prices, rising bills and onshore wind being the cheapest form of electricity generation.

When Disneyland opened in 1955, its car-themed attraction Autopia "represented the future of what would become America's multilane limited-access highways," according to Wikipedia, " which were still being developed. President Eisenhower had yet to sign the Interstate Highway legislation..."

Wikipedia adds that the cars "generate a moderate level of exhaust from the Honda GX gasoline engines that propel the cars." But that may change, according to a climate-oriented newsletter from the Los Angeles Times: If anyone could get away with defending the toxic odor, it might be Bob Gurr. He designed the original Autopia cars in the mid-1950s, working closely with Walt himself. He's proud of what they built together. But today the 92-year-old Disney legend says the polluting motors need to go. "Get rid of those God-awful gasoline fumes," he told me.

Disney is finally preparing to do just that. In news shared exclusively with The Times ahead of this column's publication — after several weeks of my prodding the company for answers on the future of Autopia — Disney officials revealed that pure gasoline engines are on their way out... "As the industry moves toward alternative fuel sources, we have developed a roadmap to electrify this attraction and are evaluating technology that will enable us to convert from gas engines in the next few years," spokesperson Jessica Good said in an email. Good wouldn't confirm whether that means electric vehicles, or if hybrids are a possibility...

[Gurr] also expressed a grander vision for Tomorrowland as a hub for stories about renewable energy, public transit and other sustainable technologies that will help us create a better tomorrow... [H]ow about using the former Innoventions building, which once displayed futuristic technologies but is now closed to most guests, to showcase solar panels, lithium-ion batteries and other clean energy devices that guests might want in their homes...? Why not switch to electric cooking at the Alien Pizza Planet restaurant, and offer induction stove demos for diners? Maybe start screening some National Geographic films (Disney owns NatGeo) at the largely unused Magic Eye Theater...? Add some infotainment-style signs and voice-overs about the wonders of clean energy and public transit, and boom, you've got a Tomorrowland that should leave kids and their parents excited to help build a safer, happier, more sustainable world...

[Gurr] told me that if he could, he'd tear out everything in Tomorrowland except the Monorail and rebuild it as a version of the public transit-oriented futuristic city that Walt once planned for Florida — only with clean energy at the core of its storytelling... At the very least, he said it's time for an Autopia where guests "don't smell the fumes, don't hear that racket of the little motor going putt-putt-putt."
The newsletter agrees electric vehicles for Autopia are "the obvious starting point" for remodeling Tomorrowland with "a buzz of optimism and futuristic energy." ("Solar-panel shade structures over the line would be great too.") They even add that "it's not that it's my job to make money for Disney, but I'm sure the company could find sponsors for this vision of Tomorrowland. There are plenty of renewable energy companies, electric utilities and environmental groups eager to tout their causes and their credentials."

And it shares this observation from climate scientist and communicator Katharine Hayhoe (paraphrasing another scientist who studies climate communications): "Showing people what climate solutions look like is one of the most effective ways to get them to support action." The newsletter's conclusion? "This is where Tomorrowland could prove especially valuable in the fight to save the planet."


Some additional context... Disney's current CEO once said he was "particuarly proud" of the 270-acre, 50+-megawatt solar facility the company brought online in Orlando." And the Washington Post reports that Disney's plans to electrify Autopia "comes as the park is taking steps to decarbonize as part of an effort to reach a goal of net-zero emissions by 2030."