Back in 2021 Hurricane Ida knocked out power lines in New Orleans, leaving parts of the city in darkness for 10 days.

So a coalition of community-based organizations (including some churches) decided to build "solar-powered disaster response hubs that could transform the city's approach to resilience," reports the Guardian. So far there's seven, but the group "has ambitions to build dozens more." On a bright, balmy autumn morning a couple of weeks ago [61-year-old pastor Antoine] Barriere climbed a long, steep ladder to show me the 460 solar panels that now cover a third or so of his church's flat roof. The solar panels were generating more than enough energy to power Household of Faith, a non-denominational megachurch with 4,000 mostly Black parishioners in New Orleans East. Downstairs, a cabinet was stacked with backup batteries that were fully charged in case of a power outage — a frequent occurrence thanks to the low-lying city's vulnerability to hurricanes, thunderstorms, high winds, extreme heat and flooding. In a worst-case scenario — no sun, thundery dark skies and power outage — the backup batteries could power essential appliances for a couple of days including the water heater, five commercial fridge freezers storing perishables for the weekly food pantry, and air conditioning for the vast main hall which could be converted into a dormitory-style shelter.

But on this brilliant cloudless morning, most of the solar-generated energy was going into the city's electric grid. New Orleans' one-for-one net metering scheme allows the church to offset its excess clean energy against the utility's dirty energy, and this should become a net zero facility within 12 months... The idea is that each community lighthouse should be an institution locals already know and trust — such as a place of worship, health clinic or community centre — that can be converted into a resilience hub where people can converge during a power outage to get cool, recharge phones, have a meal, connect to a medical device or store medication that requires refrigeration such as insulin. In addition, community lighthouses will be able to keep the services running that people rely on such as the food pantry and religious sermons, while also adding capacity to the city's wider emergency-response efforts as a distribution hub, shelter and possibly even house a makeshift clinic.
Thanks to Slashdot reader Bruce66423 for sharing the article.

The Space Weather Prediction Center is closely watching the arrival of a super-hot plasma eruption, known as a coronal mass ejection (CME), that will slam into Earth tonight, writes longtime Slashdot reader StyleChief. Images of the huge sunspot "rotating to face the earth" can be viewed here. The Space Weather Prediction Center reports: With 3 CMEs already inbound, the addition of a 4th, full halo CME has prompted SWPC forecasters to upgrade the G2 Watch on 01 Dec to a G3 Watch. This faster-moving halo CME is progged to merge with 2 of the 3 upstream CMEs, all arriving at Earth on 01 Dec. G3 (Strong) conditions are now likely on 01 Dec. Continue to monitor spaceweather.gov for the latest updates. "The rapid Earth-bound CME left the sun on Nov. 29 during a powerful M9.8-class solar flare eruption," reports Space.com. "But it isn't alone."

"The speedy plasma outburst will merge with several slower upstream CMEs that left the sun a day earlier (Nov. 28), creating a 'Cannibal CME' that will likely trigger a strong geomagnetic storm akin to a Nov. 5 event that supercharged auroras and STEVE around the world."

"Two articles from Electrek and InsideEVs describe Hyundai and Kia's new 'Uni Wheel' drive system that could revolutionize EV design," writes longtime Slashdot reader Uncle_Meataxe. From a report: Described by its makers as a "paradigm-shifting vehicle drive system," the Uni Wheel moves the main drive system components to the vacant space within an EVs wheel hubs. The approach utilizes a planetary gear configuration consisting of a sun gear in the center, four pinion gears on each side, and a ring gear surrounding everything. Traditional ICE vehicles utilize CV joints, but by moving them closer to the wheels requires a short drive train length and as a result, a decrease in efficiency and durability -- especially over bumpy terrain. Hyundai and Kia's Uni Wheel system on the other hand, can transmit power with almost zero changes to efficiency, regardless of wheel movement. "Advantages include more platform space and more room within an EV's interior," adds Uncle_Meataxe. "When this system may be integrated into an actual EV remains unclear, but Kia and Hyundai have already registered eight patents related to the technology." You can learn more about the new drive system via an instructional video on YouTube.

An anonymous reader quotes a report from the New York Times: On Oct. 9, 2022, telescopes in space picked up a jet of high energy photons careening through the cosmos toward Earth, evidence of a supernova exploding 1.9 billion light-years away. Such events are known as gamma ray bursts, and astronomers who have continued studying this one said it was the "brightest of all time." Now, a team of scientists have discovered that this burst caused a measurable change in the number of ionized particles found in Earth's upper atmosphere, including ozone molecules, which readily absorb harmful solar radiation.

"The ozone was partially depleted -- was destroyed temporarily," said Pietro Ubertini, an astronomer at the National Institute of Astrophysics in Rome who was involved in discovering the atmospheric event. The effect was detectable for just a few minutes before the ozone repaired itself, so it was "nothing serious," Dr. Ubertini said. But had the supernova occurred closer to us, he said, "it would be a catastrophe." The discovery, reported Tuesday in a paper published in the journal Nature Communications, demonstrates how even explosions that occur far from our solar system can influence the atmosphere, which can be used as a giant detector for extreme cosmic phenomena.

To study the effects of last year's gamma ray burst on Earth, Dr. Ubertini and his colleagues looked for signals at the top of the ionosphere using data from the China Seismo-Electromagnetic Satellite, an orbiter designed to study changes in the atmosphere during earthquakes. They identified a sharp jump in the electric field at the top of the ionosphere, which they correlated to the gamma ray burst signal measured by the European Space Agency's International Gamma-Ray Astrophysics Laboratory, a mission that launched in 2002 to observe radiation from faraway celestial objects. The researchers found that the electric field rose by a factor of 60 as gamma rays ionized (essentially knocking away electrons from) ozone and nitrogen molecules high in the atmosphere. Once ionized, the molecule is unable to absorb any ultraviolet radiation, temporarily exposing Earth to more of the sun's damaging rays.

Rovers and orbiters will continue collecting limited data during a two-week communications pause due to the position of Earth, the Sun, and the Red Planet. From a report: NASA will hold off sending commands to its Mars fleet for two weeks, from Nov. 11 to 25, while Earth and the Red Planet are on opposite sides of the Sun. Called Mars solar conjunction, this phenomenon happens every two years. The missions pause because hot, ionized gas expelled from the Sun's corona could potentially corrupt radio signals sent from Earth to NASA's Mars spacecraft, leading to unexpected behaviors.

That's not to say those robotic explorers are on holiday. NASA's Perseverance and Curiosity rovers will monitor changes in surface conditions, weather, and radiation as they stay parked. Although momentarily grounded, the Ingenuity Mars Helicopter will use its color camera to study the movement of sand, which poses an ever-present challenge to Mars missions. The Mars Reconnaissance Orbiter and the Odyssey orbiter will continue imaging the surface. And MAVEN will continue collecting data on interactions between the atmosphere and the Sun.

As AMD is now well into their third generation of RDNA architecture GPUs, the sun has been slowly setting on AMD's remaining Graphics Core Next (GCN) designs, better known by the architecture names of Polaris and Vega. From a report: In recent weeks the company dropped support for those GPU architectures in their open source Vulkan Linux driver, AMDVLK, and now we have confirmation that the company is slowly winding down support for these architectures in their Windows drivers as well. Under AMD's extended driver support schedule for Polaris and Vega, the drivers for these architectures will no longer be kept at feature parity with the RDNA architectures. And while AMD will continue to support Polaris and Vega for some time to come, that support is being reduced to security updates and "functionality updates as available."

For AMD users keeping a close eye on their driver releases, they'll likely recognize that AMD already began this process back in September -- though AMD hasn't officially documented the change until now. As of AMD's September Adrenaline 23.9 driver series, AMD split up the RDNA and GCN driver packages, and with that they have also split the driver branches between the two architectures. As a result, only RDNA cards are receiving new features and updates as part of AMD's mainline driver branch (currently 23.20), while the GCN cards have been parked on a maintenance driver branch - 23.19.

An anonymous reader quotes a report from the New York Times: Later this month, delegations from around the world will head to a conference in Dubai to discuss international treaties involving radio frequencies, satellite coordination and other tricky technical issues. These include the nagging problem of the clocks. For 50 years, the international community has carefully and precariously balanced two different ways of keeping time. One method, based on Earth's rotation, is as old as human timekeeping itself, an ancient and common-sense reliance on the position of the sun and stars. The other, more precise method coaxes a steady, reliable frequency from the changing state of cesium atoms and provides essential regularity for the digital devices that dominate our lives.

The trouble is that the times on these clocks diverge. The astronomical time, called Universal Time, or UT1, has tended to fall a few clicks behind the atomic one, called International Atomic Time, or TAI. So every few years since 1972, the two times have been synced by the insertion of leap seconds — pausing the atomic clocks briefly to let the astronomic one catch up. This creates UTC, Universal Coordinated Time. But it's hard to forecast precisely when the leap second will be required, and this has created an intensifying headache for technology companies, countries and the world's timekeepers.

"Having to deal with leap seconds drives me crazy," said Judah Levine, head of the Network Synchronization Project in the Time and Frequency Division at the National Institute of Standards and Technology in Boulder, Colo., where he is a leading thinker on coordinating the world's clocks. He is constantly badgered for updates and better solutions, he said: "I get a bazillion emails." On the eve of the next international discussion, Dr. Levine has written a paper that proposes a new solution: the leap minute. The idea is to sync the clocks less frequently, perhaps every half-century, essentially letting atomic time diverge from cosmos-based time for 60 seconds or even a tad longer, and basically forgetting about it in the meantime. The proposal from Levine may face opposition from vested interests and strong opinions in the international community -- notably, the Russians and the Vatican. "The head of the IBWM (or BIPM in French) said in November 2022 that Russia opposed the dropping of leap seconds because it wanted to wait until 2040," reports Ars Technica. "The nation's satellite positioning system, GLONASS, was built with leap seconds in mind, and reworking the system would seemingly be taxing."

"There's also the Vatican, which has concerned itself with astronomy since at least the Gregorian Calendar, and may also oppose the removal of leap seconds. The Rev. Paul Gabor, astrophysicist and vice director of the Vatican Observatory Research Group in Tucson, Arizona, has been quoted and cited as opposing the deeper separation of human and planetary time. Keeping proper time, Gabor wrote his 2017 book The Science of Time, is 'one of the oldest missions of astronomy.'"

"In the current Leap Second Debate, there are rational arguments, focused on practical considerations, and there is a certain unspoken unease, emerging from the symbolic substrata of the issues involved," Gabor writes.

A top scientist has proposed a new way to reconcile the two different ways that our clocks keep time. Meet -- wait for it -- the leap minute. From a report: Later this month, delegations from around the world will head to a conference in Dubai to discuss international treaties involving radio frequencies, satellite coordination and other tricky technical issues. These include the nagging problem of the clocks. For 50 years, the international community has carefully and precariously balanced two different ways of keeping time. One method, based on Earth's rotation, is as old as human timekeeping itself, an ancient and common-sense reliance on the position of the sun and stars. The other, more precise method coaxes a steady, reliable frequency from the changing state of cesium atoms and provides essential regularity for the digital devices that dominate our lives.

The trouble is that the times on these clocks diverge. The astronomical time, called Universal Time, or UT1, has tended to fall a few clicks behind the atomic one, called International Atomic Time, or TAI. So every few years since 1972, the two times have been synced by the insertion of leap seconds -- pausing the atomic clocks briefly to let the astronomic one catch up. This creates UTC, Universal Coordinated Time. But it's hard to forecast precisely when the leap second will be required, and this has created an intensifying headache for technology companies, countries and the world's timekeepers.

"Having to deal with leap seconds drives me crazy," said Judah Levine, head of the Network Synchronization Project in the Time and Frequency Division at the National Institute of Standards and Technology in Boulder, Colo., where he is a leading thinker on coordinating the world's clocks. He is constantly badgered for updates and better solutions, he said: "I get a bazillion emails." On the eve of the next international discussion, Dr. Levine has written a paper that proposes a new solution: the leap minute. The idea is to sync the clocks less frequently, perhaps every half-century, essentially letting atomic time diverge from cosmos-based time for 60 seconds or even a tad longer, and basically forgetting about it in the meantime.

"No roof, no solar power. That has been the dispiriting equation shutting out roughly half of all Americans from plugging into the sun," writes the Washington Post's "Climate Coach" column.

"But signing up for solar soon might be as easy as subscribing to Netflix." Scores of new small solar farms that sell clean, local electricity directly to customers are popping up. The setup, dubbed "community solar," is designed to bring solar power to people who don't own their own homes or can't install panels — often at prices below retail electricity rates...

At least 22 states have passed legislation encouraging independent community solar projects, but developers are just beginning to expand. Most existing projects are booked. At the moment, community solar projects in the United States generate enough electricity to power about 918,000 homes — less than 1 percent of total households, according to the Solar Energy Industries Association, a nonprofit trade group. But as more states join, and the Environmental Protection Agency's "Solar for All" program pours billions into federal solar power grants, more Americans will get the chance...

While projects exist in most states, they are highly concentrated: More than half are in Massachusetts, Minnesota and New York. These might be on a condo roof, or on open land like the 10-MW Fresno community solar farm, on a city-owned plot surrounded by agricultural land. Most are small: 2 megawatts of capacity on average, about enough to power 200 to 400 homes... The renewable energy marketplace EnergySage and the nonprofit Solar United Neighbors connect customers to community solar projects in their region. People generally receive monthly credits for electricity produced by their share of solar panels. These are subtracted from their total electricity bill or credited on future bills... Subscribers on average save about 10 percent on their utility bill (the range is 5 percent to 15 percent).

These economics are propelling the industry to record heights. Between 2016 and 2019, community solar capacity more than quadrupled to 1.4 gigawatts. By the end of this year, energy research firm Wood Mackenzie estimates, there will be 6 GW of community solar. And the Energy Department wants to see community solar reach 5 million households by 2025. "The economics are strongly on the side of doing this," says Dan Kammen, an energy professor at the University of California at Berkeley. "It's now cheaper to build new solar than to operate old fossil [fuel plants]. ... We're at the takeoff point."
The article notes "solar for renters" saves about $100 per year for the average ratepayer (while rooftop solar arrays may save homeowners over $1,000 annually). But according to the article, the arrangement still "reflects a new reality...

"Solar energy prices are falling as private and public money, and new laws, are fueling a massive expansion of small-scale community solar projects."

Images from the James Webb Space Telescope "don't match scientists' models of how the universe formed," reports the Washington Post.

"But it might not be time to dump the standard model of cosmology yet. " A recent analysis in the Astrophysical Journal Letters suggests an explanation for the surprisingly massive-seeming galaxies: brilliant, extremely bright bursts of newborn stars.

The galaxies photographed by the telescope looked far too mature and large to have formed so fully so soon after the universe began, raising questions about scientists' assumptions of galaxy formation. But when researchers ran a variety of computer simulations of the universe's earliest days, they discovered that the galaxies probably are not as large as they seem. Instead, they attribute their brightness to a phenomenon called "bursty star formation." As clouds of dust and debris collapse, they form dense, high-temperature cores and become stars. Bursty galaxies spit out new stars in intermittent, bright bursts instead of creating stars more consistently. Usually, these galaxies are low in mass and take long breaks between starbursts.

Because the galaxies in question look so bright in photos produced by the Webb telescope, scientists at first thought they were older and more massive. But bursty systems with the ability to produce extremely bright, abundant light may appear more massive than they really are.
"Not only does this finding explain why young galaxies appear deceptively massive, it also fits within the standard model of cosmology," explains the announcement: In the new study, Guochao Sun, who led the study, Northwestern's, Claude-André Faucher-Giguère, the study's senior author, and their team used advanced computer simulations to model how galaxies formed right after the Big Bang. The simulations produced cosmic dawn galaxies that were just as bright as those observed by the JWST...

Although other astrophysicists have hypothesized that bursty star formation could be responsible for the unusual brightness of galaxies at cosmic dawn, the Northwestern researchers are the first to use detailed computer simulations to prove it is possible. And they were able to do so without adding new factors that are unaligned with our standard model of the universe.

Can you heat up a pan to 30,000 degrees Fahrenheit? That's the burning question at the center of this proposed class action lawsuit, which claims the advertising for SharkNinja's nonstick cookware violates the laws of physics and thermodynamics. From a report: While SharkNinja is the company best known for its Shark robovacs and Ninja kitchen gadget, this lawsuit takes issue with the Ninja NeverStick Premium Cookware collection, a line of pots and pans it advertises as having superior nonsticking and nonflaking qualities thanks to its manufacturing process.

Instead of making its pans at a measly 900-degree temperature that other brands use, SharkNinja says it heats up the cookware to a maximum of 30,000 degrees Fahrenheit. That process, according to SharkNinja, fuses "plasma ceramic particles" to the surface of the pan, "creating a super-hard, textured surface that interlocks with our exclusive coating for a superior bond." But Patricia Brown, the person who filed this lawsuit, isn't buying it. As cited in Brown's lawsuit, NASA recently said the "surface of the Sun is a blisteringly hot 10,340 degrees Fahrenheit," meaning SharkNinja's manufacturing process reaches about three times that temperature.

An anonymous reader quotes a report from CNN: Zero-emission cars are soaring in popularity but running an electric vehicle is next to impossible in places with limited charging infrastructure. Stella Terra could change that. The khaki-green SUV uses solar panels on its sloping roof to charge its electric battery, meaning it can drive long distances powered entirely by the sun. Built by a team of students at Eindhoven University of Technology (TUE), "the world's first off-road solar-powered vehicle" could help connect remote areas "where roads are less developed and energy grids are not as reliable," and assist with emergency aid and deliveries, says Thieme Bosman, events manager for the team.

The team tested the vehicle in Morocco earlier this month, driving more than 1,000 kilometers (621 miles) between the country's northern coast and the Sahara Desert in the south. "Morocco has a huge variety of landscapes and different surfaces in quite a short distance," says Bosman, adding that the car was tested "on every type of surface that a car like this could encounter." The road-legal car has a top speed of 145 kilometers (90 miles) per hour. On a sunny day, its battery range is around 710 kilometers (441 miles) on roads, and around 550 kilometers (342 miles) off-road, depending on the surface. In cloudy conditions, the team estimates the range could be 50 kilometers less. Bosman noted that the vehicle had proved to be one-third more efficient than expected on the trip, and that its lightweight design made it less liable to get stuck on rugged terrain, and put less stress on its suspension.

"Where the SUV market currently innovates on the previous models, we really start from scratch and design everything ourselves," says Bosman. Minimizing the vehicle's weight was essential, and the team of 22 students focused on making every element ultra-efficient. At just 2,645 pounds (1,200 kilograms), Stella Terra weighs around 25% less than the average mid-sized SUV. The aerodynamic design also reduces drag and uses "lightweight and robust" composite materials to cut weight, says Bob van Ginkel, technical manager for Stella Terra. "(One of) the benefits of the solar panels on top is that we can have a much smaller battery because we are charging while driving," van Ginkel adds. Bosman and his peers hope their concept SUV could be mass produced in the near future. "We aim to also inspire not only everyday people, but also the automotive industry, the Ford and Chryslers of the world, to think again about their designs and to innovate faster than they currently do," says Bosman.

"It's up to the market now, who have the resources and the power to make this change and the switch to more sustainable vehicles."

Long-time Slashdot reader SonicSpike shared the Washington Post's speculation about the possibility of a gigantic solar storm leaving millions without phone or internet access, and requiring months or years of rebuilding: The odds are low that in any given year a storm big enough to cause effects this widespread will happen. And the severity of those impacts will depend on many factors, including the state of our planet's magnetic field on that day. But it's a near certainty that some form of this catastrophe will happen someday, says Ian Cohen, a chief scientist who studies heliophysics at the Johns Hopkins Applied Physics Laboratory.
Long-time Slashdot reader davidwr remains skeptical. "I've only heard of two major events in the last 1300 years, one estimated to be between A. D. 744 and A. D. 993, and the other being the Carrington Event in 1859.

But efforts are being made to improve our readiness, reports the Washington Post: To get ahead of this threat, a loose federation of U.S. and international government agencies, and hundreds of scientists affiliated with those bodies, have begun working on how to make predictions about what our Sun might do. And a small but growing cadre of scientists argue that artificial intelligence will be an essential component of efforts to give us advance notice of such a storm...

At present, no warning system is capable of giving us more than a few hours' notice of a devastating solar storm. If it's moving fast enough, it could be as little as 15 minutes. The most useful sentinel — a sun-orbiting satellite launched by the U.S. in 2015 — is much closer to Earth than the sun, so that by the time a fast-moving storm crosses its path, an hour or less is all the warning we get. The European Space Agency has proposed a system to help give earlier warning by putting a satellite dubbed Vigil into orbit around the Sun, positioned roughly the same distance from the Earth as the Earth is from the Sun. It could potentially give us up to five hours of warning about an incoming solar storm-enough time to do the main thing that can help preserve electronics: Switch them all off.

But what if there were a way to predict this better, by analyzing the data we've got? That's the idea behind a new, AI-powered model recently unveiled by scientists at the Frontier Development Lab — a public-private partnership that includes NASA, the U.S. Geological Survey, and the U.S. Department of Energy. The model uses deep learning, a type of AI, to examine the flow of the solar wind, the usually calm stream of particles that flow outward from our sun and through the solar system to well beyond the orbit of Pluto. Using observations of that solar wind, the model can predict the "geomagnetic disturbance" an incoming solar storm observed by sun-orbiting satellites would cause at any given point on Earth, the researchers involved say. This model can predict just how big the flux of the Earth's magnetic field will be when the solar storm arrives, and thus how big the induced currents in power lines and undersea internet cables will be...

Already, the first primitive ancestor of future AI-based solar-weather alert systems is live. The DstLive system, which debuted on the web in December 2022, uses machine learning to take data about the state of Earth's magnetic field and the solar wind and translate both into a single measure for the entire planet, known as DST. Think of it as the Richter scale, but for solar storms. This number is intended to give us an idea of how intense a storm's impact will be on earth, an hour to six hours in advance.

Unfortunately, we may not know how useful such systems are until we live through a major solar storm.

Is the asteroid Psyche really a hunk of mostly metal? Is the object, which is nearly as wide as Massachusetts, the core of a baby planet whose rocky outer layers were knocked off during a cataclysmic collision in the early days of the solar system? Right now, all that astronomers can say is maybe, maybe not. NASA launched a spacecraft on Friday morning, also named Psyche, on a journey to the asteroid belt between Mars and Jupiter to find out. From a report: "We're really going to see a kind of new object, which means that a lot of our ideas are going to be proven wrong," said Lindy Elkins-Tanton, a professor of earth and space exploration at Arizona State University who serves as the mission's principal investigator.

Being proven wrong, she added, "is, I think, the most exciting thing in science." That voyage in search of answers kicked off Friday at 10:19 a.m. Eastern time. Falcon Heavy, the largest of SpaceX's operational rockets, lifted off from Kennedy Space Center in Florida, sending the massive spacecraft on a journey that will last about six years and travel billions of miles. Friday's flight overcame early, unfavorable weather forecasts for a seemingly flawless flight. About eight minutes into the flight, the rocket's upper stage entered a 45-minute coasting period during which it will prepare to deploy the spacecraft on its flight away from Earth. The asteroid named Psyche has long been a curious enigma. Spotted in 1852 by Annibale de Gasparis, an Italian astronomer, it is named for the Greek goddess of the soul, and it was just the 16th asteroid to be discovered. In the early observations, it was, like the other asteroids, a starlike point of light that moved in an orbit around the sun, and not much more.

Tablizer shares a report from Space.com: In a solar system called TRAPPIST-1, 40 light years from the sun, seven Earth-sized planets revolve around a cold star. Astronomers obtained new data from the James Webb Space Telescope (JWST) on TRAPPIST-1 b, the planet in the TRAPPIST-1 solar system closest to its star. These new observations offer insights into how its star can affect observations of exoplanets in the habitable zone of cool stars. In the habitable zone, liquid water can still exist on the orbiting planet's surface.

The team, which included University of Michigan astronomer and NASA Sagan Fellow Ryan MacDonald, published its study in the journal The Astrophysical Journal Letters. "Our observations did not see signs of an atmosphere around TRAPPIST-1 b. This tells us the planet could be a bare rock, have clouds high in the atmosphere or have a very heavy molecule like carbon dioxide that makes the atmosphere too small to detect," MacDonald said. "But what we do see is that the star is absolutely the biggest effect dominating our observations, and this will do the exact same thing to other planets in the system.

An anonymous reader shares a report: Imagine demanding an "honest" debate over the cost of net zero in a report full of errors that even a schoolboy would be embarrassed about. Then imagine getting coverage of your report in the Sun, Times, Daily Mail, Daily Express and Spectator. Sound impossible? Well, let me tell you how Civitas, one of the thinktanks housed at 55 Tufton Street in London, did exactly that, and nearly got away with it. On Wednesday, Civitas published a pamphlet on net zero by Ewen Stewart, whose consultancy, Walbrook Economics, works on "the interaction of macroeconomics, politics and capital markets." Stewart is also a climate sceptic, having written in 2021 that human-caused warming is a "contested theory." Along with Civitas, 55 Tufton Street also houses the climate-sceptic lobby group the Global Warming Policy Foundation and its campaigning arm Net Zero Watch. These groups previously attempted to spark an "honest debate about the cost of net-zero" in 2020.

The Civitas report claims to offer a "realistic" $5.5tn estimate of the cost of reaching net zero emissions by 2050 and says "the government need to be honest with the British people." This estimate is much higher than the figure produced by the government's official adviser, the Climate Change Committee (CCC), which has said that reaching net zero would require net investments of $1.71tn by 2050. Note the difference between Civitas's "costs" and the CCC's "net investments." The CCC also found that reaching net zero would generate savings in the form of lower fossil fuel bills worth $1.34tn, resulting in a net cost of $0.37tn. In his report for Civitas, Stewart adopts the well-worn climate-sceptic tactic of simply ignoring these savings. He also ignores what the Office for Budget Responsibility has called the potentially "catastrophic economic and fiscal consequences" of unmitigated climate change. The report was timed to follow hot on the heels of Rishi Sunak's big climate speech, in which he called for an "honest" approach to net zero that ends "unacceptable costs."

Astronomers have captured the first direct evidence of a black hole spinning, providing new insights into the universe's most enigmatic objects. From a report: The observations focus on the supermassive black hole at the centre of the neighbouring Messier 87 galaxy, whose shadow was imaged by the Event Horizon Telescope. Like many supermassive black holes, M87 features powerful jets that are launched from the poles at close to the speed of light into intergalactic space. Scientists have predicted that the rotation of a black hole powers these cosmic jets, but until now direct evidence was elusive.

"After the success of black hole imaging in this galaxy with the Event Horizon Telescope, whether this black hole is spinning or not has been a central concern among scientists," said Dr Kazuhiro Hada, of the national astronomical observatory of Japan and co-author. "Now anticipation has turned into certainty. This monster black hole is indeed spinning." M87 is located 55m light years from the Earth and harbours a black hole 6.5bn times more massive than the Sun. Just beyond the black hole is an accretion disk of gas and dust, swirling on the precipice of the cosmic sinkhole. Some of this material is destined to fall into the black hole, disappearing for ever. But a fraction will be ejected out from the poles of the black hole at more than 99.99% of the speed of light. The paper: Precessing jet nozzle connecting to a spinning black hole in M87 (Nature).

"As the sun rose on Friday over the lunar plateau where India's Vikram lander and Pragyan rover sit, the robotic explorers remained silent," writes the New York Times: The Indian Space Research Organization, India's equivalent of NASA, said on Friday that mission controllers on the ground had sent a wake-up message to Vikram. The lander, as expected, did not reply. Efforts will continue over the next few days, but this could well be the conclusion of Chandrayaan-3, India's first successful space mission to the surface of another world...

The hope was that when sunlight again warmed the solar panels, the spacecraft would recharge and revive. But that was wishful thinking. Neither Vikram nor Pragyan were designed to survive a long, frigid lunar night when temperatures plunge to more than a hundred degrees below zero, far colder than the electronic components were designed for. The spacecraft designers could have added heaters or used more resilient components, but that would have added cost, weight and complexity...

The mission's science observations included a temperature probe deployed from Vikram that pushed into the lunar soil. The probe recorded a sharp drop, from about 120 degrees Fahrenheit at the surface to 10 degrees just three inches down. Lunar soil is a poor conductor of heat. The poor heat conduction could be a boon for future astronauts; an underground outpost would be well-insulated from the enormous temperature swings at the surface. Another instrument on Vikram, a seismometer, detected on Aug. 26 what appeared to be a moonquake... The Pragyan measurement suggests that concentrations of sulfur might be higher in the polar regions. Sulfur is a useful element in technologies like solar cells and batteries, as well as in fertilizer and concrete.

Before it went to sleep earlier this month, Vikram made a small final move, firing its engines to rise about 16 inches above the surface before softly landing again. The hop shifted Vikram's position by 12 to 16 inches, ISRO said. "Hoping for a successful awakening for another set of assignments!" ISRO posted on X, the social network formerly known as Twitter, on Sept. 2. "Else, it will forever stay there as India's lunar ambassador."
"Efforts to establish contact will continue," ISRO tweeted yesterday...

The sea-ice surrounding Antarctica is well below any previous recorded winter level, satellite data shows, a worrying new benchmark for a region that once seemed resistant to global warming. BBC: "It's so far outside anything we've seen, it's almost mind-blowing," says Walter Meier, who monitors sea-ice with the National Snow and Ice Data Center. An unstable Antarctica could have far-reaching consequences, polar experts warn. Antarctica's huge ice expanse regulates the planet's temperature, as the white surface reflects the Sun's energy back into the atmosphere and also cools the water beneath and near it.

Without its ice cooling the planet, Antarctica could transform from Earth's refrigerator to a radiator, experts say. The ice that floats on the Antarctic Ocean's surface now measures less than 17 million sq km - that is 1.5 million sq km of sea-ice less than the September average, and well below previous winter record lows. That's an area of missing ice about five times the size of the British Isles. Dr Meier is not optimistic that the sea-ice will recover to a significant degree.

Scientists are still trying to identify all the factors that led to this year's low sea-ice - but studying trends in Antarctica has historically been challenging. In a year when several global heat and ocean temperature records have broken, some scientists insist the low sea-ice is the measure to pay attention to. "We can see how much more vulnerable it is," says Dr Robbie Mallett, of the University of Manitoba, who is based on the Antarctic peninsula. Already braving isolation, extreme cold and powerful winds, this year's thin sea-ice has made his team's work even more difficult. "There is a risk that it breaks off and drifts out to sea with us on it," Dr Mallett says.

In late August the blog of Harvard professor Avi Loeb declared he had "Wonderful news! For the first time in history, scientists analyzed materials from a meter-size object that originated from outside the solar system."

In July Loeb retrieved parts of a meteor that landed in the waters off of Papua, New Guinea in 2014. A local New York newscast describes the find as "metallic marbles, less than a millimeter in diameter," while Loeb called them "beautiful spheres that were colored — blue, brown or gold."

Now USA Today reports: Early analysis shows that some spherules from the meteor path contain "extremely high abundances" of an unheard-of composition of heavy elements. Researchers on the team say the composition of beryllium, lanthanum and uranium, labeled as a "BeLaU" composition, does not match terrestrial alloys natural to Earth or fallout from nuclear explosions. Additionally, the composition is not found in magma oceans of Earth, nor the moon, Mars or other natural bodies in the solar system.

Other elements are thought to have been lost by evaporation during IM1's passage through the Earth's atmosphere, researchers said, leading them to theorize that the spherules could originate in a magma ocean on an exoplanet with an iron core outside the solar system.
Long-time Slashdot reader Okian Warrior writes that "Technical details can be found here, and a readable accounting of the analysis and results can be found on Avi Loeb's blog." Loeb writes that the exact composition of those spheres are now being studied at three separate laboratories, including one at Harvard.

In July the New York Times published reactions to Loeb's claim that "It's most likely a technological gadget with artificial intelligence." "People are sick of hearing about Avi Loeb's wild claims," said Steve Desch, an astrophysicist at Arizona State University. "It's polluting good science — conflating the good science we do with this ridiculous sensationalism and sucking all the oxygen out of the room." Dr. Desch added that several of his colleagues were now refusing to engage with Dr. Loeb's work in peer review, the process by which scholars evaluate one another's research to ensure that only high-quality studies are published... "What the public is seeing in Loeb is not how science works. And they shouldn't go away thinking that."
Last week Salon also had a few questions for Loeb: In your book, you called Carl Sagan's adage that "extraordinary claims require extraordinary evidence" a "logical fallacy." How and why do you think that statement is somewhat flawed or a logical fallacy?

It's used as an excuse for people who don't want to deal with an exciting possibility. They don't seek the evidence and they argue, "Well, we don't have any evidence...."

If or when we encounter extraterrestrial life, do you think we'll find it or it will find us? Why?

I think we will find it near us because most stars [formed] billions of years before the sun, so it's more likely that some other civilizations preceded us because their star, if it's like the sun, already went through what we in the future might go through. We just need to be humble and modest, not assume that we are unique and special — that Albert Einstein was the smartest scientist who ever lived since the Big Bang — and engage in the search.

That's what I'm trying to do, and the pushback is really strange under these circumstances because the people who argue against it have very strong opinions. But if you look at the history of science, they were very often wrong: the people [who] thought that the earth was the center of the universe, for example.
From Loeb's blog post: During my routine jog at sunrise on the deck of Silver Star, I was asked: "Are you running away from something or towards something?" My answer was: "Both. I am running away from colleagues who have strong opinions without seeking evidence, and I am running towards a higher intelligence in interstellar space."