The European Space Agency appears to have a slight problem: a critical antenna is jammed on their Jupiter-bound spacecraft launched two weeks ago. From the Associated Press: The 52-foot (16-meter) radar antenna on Juice unfolded only one-third of the way following liftoff, according to the space agency. Engineers suspect a tiny pin may be protruding. Flight controllers in Germany plan to fire the spacecraft's engine in hopes of shaking the pin loose. If that doesn't work, they said they have plenty of time to solve the problem.

Juice, short for Jupiter Icy Moons Explorer, won't reach the giant planet until 2031. It's taking a roundabout path to get there, including gravity-assist flybys of Earth and our moon, and Venus. The radar antenna is needed to peer beneath the icy crust of three Jupiter moons suspected of harboring underground oceans and possibly life, a major goal of the nearly $1.8 billion mission. Its targets include Callisto, Europa and Ganymede, the largest moon in the solar system.

An anonymous readers this surprising story from Mashable: When a Russian spaceship docked as a lifeboat for three stranded men at the International Space Station in February, one may have wondered if Sergei Krikalev, heading the rescue mission, felt any deja vu.

If that name doesn't ring a bell, he's also sometimes known as "the last Soviet" for his more than 311 days spent in space as the Soviet Union collapsed 250 miles beneath him in 1991. He was only meant to be at the Mir station for five months. Instead, he remained for close to a year, never abandoning the outpost.

Today, Krikalev, the former cosmonaut, is the executive director of human spaceflight for the Russian space agency. That means it's on his watch to make sure NASA astronaut Frank Rubio and cosmonauts Sergey Prokopyev and Dmitry Petelin get back home safely after their ship sprang a leak at the station in December 2022. The three marooned crew members were supposed to return this month. But their mission will now stretch for a year, until a new crew arrives to relieve them on a separate spacecraft in six months.

Krikalev's story of being stranded in space is now getting a perhaps overdue spotlight with a new podcast series called "The Last Soviet." And it's being told by another cosmonaut, Lance Bass.... Few may remember that boy-band member Bass almost made it to space on a Soyuz spacecraft himself. In 2002, he spent about six months, off and on, training in Star City, Russia, and was certified by Russia and NASA to fly a mission to the space station.

The mission of NASA's robotic lander InSight "is nearing an end as dust obscures its solar panels," reports CNN. "In a matter of weeks, the lander won't be able to send a beep to show it's OK anymore."

"Before it bids farewell, though, the spacecraft still has some surprises in store." When Mars rumbled beneath InSight's feet on December 24, NASA scientists thought it was just another marsquake. The magnitude 4 quake was actually caused by a space rock slamming into the Martian surface a couple thousand miles away. The meteoroid left quite a crater on the red planet, and it revealed glimmering chunks of ice in an entirely unexpected place — near the warm Martian equator.
The chunks of ice — the size of boulders — "were found buried closer to the warm Martian equator than any ice that has ever been detected on the planet," CNN explained earlier this week. The article also adds that ice below the surface of Mars "could be used for drinking water, rocket propellant and even growing crops and plants by future astronauts. And the fact that the ice was found so near the equator, the warmest region on Mars, might make it an ideal place to land crewed missions to the red planet." Interestingly, they note that scientists only realized it was a meteoroid strike (and not an earthquake) when "Before and after photos captured from above by the Mars Reconnaissance Orbiter, which has been circling Mars since 2006, spotted a new crater this past February." A crater that was 492 feet (150 meters) across and 70 feet (21 meters) deep... When scientists connected the dots from both missions, they realized it was one of the largest meteoroid strikes on Mars since NASA began studying the red planet.... The journal Science published two new studies describing the impact and its effects on Thursday....

"The image of the impact was unlike any I had seen before, with the massive crater, the exposed ice, and the dramatic blast zone preserved in the Martian dust," said Liliya Posiolova, orbital science operations lead for the orbiter at Malin Space Science Systems in San Diego, in a statement....

Researchers estimated the meteoroid, the name for a space rock before it hits the ground, was about 16 to 39 feet (5 to 12 meters). While this would have been small enough to burn up in Earth's atmosphere, the same can't be said for Mars, which has a thin atmosphere only 1% as dense as Earth's.... Some of the material blasted out of the crater landed as far as 23 miles (37 kilometers) away.

Teams at NASA also captured sound from the impact, so you can listen to what it sounds like when a space rock hits Mars. The images captured by the orbiter, along with seismic data recorded by InSight, make the impact one of the largest craters in our solar system ever observed as it was created.

Descending up to 40 meters beneath the Baltic Sea, the world's longest immersed tunnel will link Denmark and Germany, slashing journey times between the two countries when it opens in 2029. CNN Travel reports: After more than a decade of planning, construction started on the Fehmarnbelt Tunnel in 2020 and in the months since a temporary harbor has been completed on the Danish side. It will host the factory that will soon build the 89 massive concrete sections that will make up the tunnel. "The expectation is that the first production line will be ready around the end of the year, or beginning of next year," said Henrik Vincentsen, CEO of Femern A/S, the state-owned Danish company in charge of the project. "By the beginning of 2024 we have to be ready to immerse the first tunnel element."

The tunnel, which will be 18 kilometers (11.1 miles) long, is one of Europe's largest infrastructure projects, with a construction budget of over 7 billion euros ($7.1 billion). [...] It will be built across the Fehmarn Belt, a strait between the German island of Fehmarn and the Danish island of Lolland, and is designed as an alternative to the current ferry service from Rodby and Puttgarden, which carries millions of passengers every year. Where the crossing now takes 45 minutes by ferry, it will take just seven minutes by train and 10 minutes by car. The tunnel, whose official name is Fehmarnbelt Fixed Link, will also be the longest combined road and rail tunnel anywhere in the world. It will comprise two double-lane motorways -- separated by a service passageway -- and two electrified rail tracks. "Today, if you were to take a train trip from Copenhagen to Hamburg, it would take you around four and a half hours," says Jens Ole Kaslund, technical director at Femern A/S, the state-owned Danish company in charge of the project. "When the tunnel will be completed, the same journey will take two and a half hours."

"Today a lot of people fly between the two cities, but in the future it will be better to just take the train," he adds. The same trip by car will be around an hour faster than today, taking into account time saved by not lining up for the ferry.

"The poles are warming several times faster than the global average," Phys.org reminds us, "causing record smashing heatwaves that were reported earlier this year in both the Arctic and Antarctic. Melting ice and collapsing glaciers at high latitudes would accelerate sea level rise around the planet.

"Fortunately, refreezing the poles by reducing incoming sunlight would be both feasible and remarkably cheap, according to new research published Friday in Environmental Research Communications." Scientists laid out a possible future program whereby high-flying jets would spray microscopic aerosol particles into the atmosphere at latitudes of 60 degrees north and south — roughly Anchorage and the southern tip of Patagonia. If injected at a height of 43,000 feet (above airliner cruising altitudes), these aerosols would slowly drift poleward, slightly shading the surface beneath. "There is widespread and sensible trepidation about deploying aerosols to cool the planet," notes lead author Wake Smith, "but if the risk/benefit equation were to pay off anywhere, it would be at the poles."

Particle injections would be performed seasonally in the long days of the local spring and early summer. The same fleet of jets could service both hemispheres, ferrying to the opposite pole with the change of seasons.

newly designed high-altitude tankers would prove much more efficient. A fleet of roughly 125 such tankers could loft a payload sufficient to cool the regions poleward of 60 degreesN/S by 2 degreesC per year, which would return them close to their pre-industrial average temperatures. Costs are estimated at $11 billion annually — less than one-third the cost of cooling the entire planet by the same 2 degreesC magnitude and a tiny fraction of the cost of reaching net zero emissions.
Smith calls the idea "game-changing" (while also warning it's "not a substitute for decarbonization").

"Chess engines have redefined creativity in chess," argues the Atlantic, "leading to a situation where the game's top players can no longer get away with simply playing the strongest chess they can, but must also engage in subterfuge, misdirection, and other psychological techniques."

The article's title? "Chess is just poker now." And it starts by noting one inconvenient truth about still-unresolved allegations that Hans Niemann cheated to defeat world chess champion Magnus Carlsen: Whatever really happened here, everyone agrees that for Niemann, or anyone else, to cheat at chess in 2022 would be conceptually simple. In the past 15 years, widely available AI software packages, known as "chess engines," have been developed to the point where they can easily demolish the world's best chess players — so all a cheater has to do to win is figure out a way to channel a machine's advice....

What once seemed magical became calculable; where one could rely on intuition came to require rigorous memorization and training with a machine. Chess, once poetic and philosophical, was acquiring elements of a spelling bee: a battle of preparation, a measure of hours invested. "The thrill used to be about using your mind creatively and working out unique and difficult solutions to strategical problems," the grandmaster Wesley So, the fifth-ranked player in the world, told me via email. "Not testing each other to see who has the better memorization plan...."

The advent of neural-net engines thrills many chess players and coaches... Carlsen said he was "inspired" the first time he saw AlphaZero play. Engines have made it easier for amateurs to improve, while unlocking new dimensions of the game for experts. In this view, chess engines have not eliminated creativity but instead redefined what it means to be creative.

Yet if computers set the gold standard of play, and top players can only try to mimic them, then it's not clear what, exactly, humans are creating. "Due to the predominance of engine use today," the grandmaster So explained, "we are being encouraged to halt all creative thought and play like mechanical bots. It's so boring. So beneath us." And if elite players stand no chance against machines, instead settling for outsmarting their human opponents by playing subtle, unexpected, or suboptimal moves that weaponize "human frailty," then modern-era chess looks more and more like a game of psychological warfare: not so much a spelling bee as a round of poker.

An anonymous reader quotes a report from Motherboard: More than a billion miles away from Earth, on the ice giants of Neptune and Uranus, diamonds are forever. This isn't cosmic poetry, but a reasonable scientific conclusion: We know that under extreme pressures and high temperatures miles beneath a planet's surface, hydrocarbons are pummeled into a crystalline bling coveted by the affianced. But on far-flung Neptune and Uranus, the Universe's diamond-making process is a bit more curious. Since the 1970s, scientists believed that diamonds might actually rain down toward the mostly slushy planets' rocky interiors -- a diamond rain, if you will. In 2017, researchers in Germany and California found a way to replicate those planetary conditions, fabricating teeny tiny diamonds called nanodiamonds in the lab using polystyrene (aka Styrofoam). Five years later and they're back at it again, this time using some good ol' polyethylene terephthalate (PET), according to a study published on Friday in Science Advances. The research has implications not only for our understanding of space, but paves a path toward creating nanodiamonds that are used in a range of contexts out of waste plastic.

So, why in the world are we making diamonds out of the same plastic that things like food containers and water bottles are made of? There's a good reason for this, Dominik Kraus, a scientist at the German research laboratory Helmholtz-Zentrum Dresden-Rossendorf and lead author of the study, said in an email. When Kraus and his colleagues first attempted making nanodiamonds with polystyrene -- which contains the same elements of carbon and hydrogen found on Neptune and Uranus -- they did so by bombarding the material with the Linac Coherent Light Source, a high-powered X-ray laser at the SLAC National Acceleratory Laboratory in California. This process rapidly heated the polystyrene to 5,000 Kelvin (around 8,540 degrees Fahrenheit) and compressed it by 150 gigapascals, similar to conditions found about 6,000 miles into the interior of the icy planets. While the researchers were able to make the microscopic bling with two quick hits from the laser, they later realized one vital chemical ingredient was missing: oxygen. So they turned to PET, which has a good balance of not only carbon and hydrogen but also oxygen, making it a closer chemical proxy to the ice giants than polystyrene.

"The chemistry at these conditions is very complex and modeling extremely difficult. 'Anything can happen' is a typical phrase when discussing such scenarios with theorists," said Kraus. "Indeed, there were some predictions showing that the presence of oxygen is helping [carbon separate from hydrogen] and diamond formation, but also ideas that it may be the other way around." To put the theoretical pedal to the metal, Kraus and his colleagues took a piece of PET, put it through the same 2017 experimental motions, but also included something called small angle X-ray diffraction to see how quickly and how large the diamonds grow. "We found that the presence of oxygen enhances diamond formation instead of preventing it, making 'diamond rain' inside those planets a more likely scenario," said Kraus. "We [also] see that diamonds grow larger for higher pressures and with progressing time in the experiments." They were also able to squeeze out a lot of tiny diamonds from just one shot of X-ray, on the order of a few billion crystallites (or a few micrograms if you're talking total weight). But Kraus said this isn't enough, at least right now, for application purposes like diamond quantum sensors, which are used to detect magnetic flow, or chemical catalysts, which need a couple of milligrams at minimum. However, it could eventually be scaled up to serve those purposes, and be the first step to a more ritzy way of plastic recycling. Kraus and his team also believe they found more evidence for superionic water, a bizarre type of water that acts like a weird cross between solid and liquid. "Kraus said that the finding that nanodiamonds indeed form inside ice giants makes it more likely for the conditions for superionic water to arise," reports Motherboard.

Kraus said: "[O]ur experiments show that carbon is separating from hydrogen and oxygen allowing pure water regions to form inside the planets. Thus, by making diamond precipitation a more realistic scenario inside those planets, also the formation of superionic water becomes more likely."

Slashdot reader DevNull127 writes: The BBC looks at a 100-year art project in which famous authors write books that will not be published until the year 2113. An annual ceremony takes place near a forest of sapling trees which will be turned into paper in the year 2113 and then used for printing those books.
From the article: It began with the author Margaret Atwood, who wrote a story called Scribbler Moon, and since then the library has solicited submissions from all over the world... All the manuscripts will be stored for almost a century inside locked glass drawers in a hidden corner of Oslo's main public library, within a small, wooden repository called the Silent Room. In 2114, the drawers will be unlocked, and the trees chopped down — and 100 stories hidden for a century will finally be published in one go.
It's part of Scottish artist Katie Paterson's fascination with the passage of time: One of her first works, Vatnajokull (the sound of) [included] a phone number that anyone could call to listen to an Icelandic glacier melting. Dial the number, and you'd be routed to a microphone beneath the water in the Jökulsárlón lagoon on Iceland's south coast, where blue-tinged icebergs calve away and float towards the sea....

One of her most recent exhibitions in Edinburgh, Requiem at Ingleby Gallery, featured 364 vials of crushed dust, each one representing a different moment in deep time. Vial #1 was a sample of presolar grains older than the Sun, followed by powdered four-billion-year-old rocks, corals from prehistoric seas, and other traces of the distant past. A few visitors were invited to pour one of the vials into a central urn: when I was there in June, I poured #227, a four-million-year-old Asteroidea fossil, a kind of sea star....

Of all her work exploring the long-term though, Future Library is the project most likely to be remembered across time itself. Indeed, it was deliberately created to be. And this year its longevity was ensured: Oslo's city leaders signed a contract formally committing them and their successors to protect the forest and library over the next 100 years.

sciencehabit shares a report from Science.org: Two minutes after the world's biggest tectonic plate shuddered off the coast of Japan, the country's meteorological agency issued its final warning to about 50 million residents: A magnitude 8.1 earthquake had generated a tsunami that was headed for shore. But it wasn't until hours after the waves arrived that experts gauged the true size of the 11 March 2011 Tohoku quake. Ultimately, it rang in at a magnitude 9 -- releasing more than 22 times the energy experts predicted and leaving at least 18,000 dead, some in areas that never received the alert. Now, scientists have found a way to get more accurate size estimates faster, by using computer algorithms to identify the wake from gravitational waves that shoot from the fault at the speed of light.

Recently, researchers involved in the hunt for gravitational waves -- ripples in space-time created by the movement of massive objects -- realized that those gravity signals, traveling at the speed of light, might also be used to monitor earthquakes. "The idea is that as soon as mass moves anywhere, the gravitational field changes, and ... everything feels it," says Bernard Whiting, a physicist at the University of Florida who worked on the Laser Interferometer Gravitational-Wave Observatory. "What was amazing was that the signal would be present even in seismometers." Sure enough, in 2016, Whiting and his colleagues reported that regular seismometers could detect these gravity signals. Earthquakes result in large shifts in mass; those shifts give off gravitational effects that deform both existing gravitational fields and the ground beneath seismometers. By measuring the difference between these two, the scientists concluded they could create a new kind of earthquake early warning system. Gravitational signals show up on seismometers before the arrival of the first seismic waves, in a portion of the seismogram that's traditionally ignored. By combining signals from dozens of seismometers on top of one another, scientists can identify patterns to interpret the size and location of large events, Whiting says.

Now, Andrea Licciardi, a postdoc at Cote d'Azur University, and his colleagues have built a machine-learning algorithm to do that pattern recognition. They trained the model on hundreds of thousands of simulated earthquakes before testing it on the real data set from Tohoku. The model accurately predicted the earthquake's magnitude in about 50 seconds -- faster than other state-of-the-art early warning systems, researchers report today in Nature. "It's more than the seed of an idea -- they've shown that it can be done," Whiting says. "What we showed was a proof of principle. What they're showing is a proof of implementation."

78-year-old rancher Ed Butcher has, for 60 years, lived with a nuclear missile as his closest neighbor — an active U.S. government nuclear missile, buried just beneath his cow pasture.

"Do you think they'll ever shoot it up into the sky?" asks his wife Pam, during a visit from the Washington Post.

"I used to say, 'No way,' " Ed said. "Now it's more like, 'Please God, don't let us be here to see it.' " The missile was called a Minuteman III, and the launch site had been on their property since the Cold War, when the Air Force paid $150 for one acre of their land as it installed an arsenal of nuclear weapons across the rural West. About 400 of those missiles remain active and ready to launch at a few seconds notice in Montana, Wyoming, North Dakota, Colorado and Nebraska. They are located on bison preserves and Indian reservations. They sit across from a national forest, behind a rodeo grandstand, down the road from a one-room schoolhouse, and on dozens of private farms like the one belonging to the Butchers, who have lived for 60 years with a nuclear missile as their closest neighbor.

It's buried behind a chain-link fence and beneath a 110-ton door of concrete and steel. It's 60 feet long. It weighs 79,432 pounds. It has an explosive power at least 20 times greater than the atomic bomb that killed 140,000 people in Hiroshima. An Air Force team is stationed in an underground bunker a few miles away, ready to fire the missile at any moment if the order comes. It would tear out of the silo in about 3.4 seconds and climb above the ranch at 10,000 feet per second. It was designed to rise 70 miles above Earth, fly across the world in 25 minutes and detonate within a few hundred yards of its target. The ensuing fireball would vaporize every person and every structure within a half-mile. The blast would flatten buildings across a five-mile radius. Secondary fires and fatal doses of radiation would spread over dozens more miles, resulting in what U.S. military experts have referred to as "total nuclear annihilation."

"I bet it would fly right over our living room," Ed said. "I wonder if we'd even see it."

"We'd hear it. We'd feel it," Pam said. "The whole house would be shaking."

"And if we're shooting off missiles, you can bet some are headed back toward us," Ed said... "I guess we'd head for the storage room," Ed said.

"Make a few goodbye calls," Pam said. "Hold hands. Pray."

Ed got up to clear his plate. "Good thing it's all hypothetical. It's really only there for deterrence. It'll never actually explode."

"You're right," Pam said. "It won't happen. Almost definitely not."

Slashdot reader sciencehabit shares this article from Science magazine: Robots can be programmed to lift a car and even help perform some surgeries, but when it comes to picking up an object they have not touched before, such as an egg, they often fail miserably. Now, engineers have come up with an artificial fingertip that overcomes that limitation. The advance enables machines to sense the textures of these surfaces a lot like a human fingertip does....

[W]hen researchers at the University of Bristol began designing an artificial fingertip in 2009, they used human skin as a guide. Their first fingertip — assembled by hand — was about the size of a soda can. By 2018, they had switched to 3D printing. That made it possible to make the tip and all its components about the size of an adult's big toe and more easily create a series of layers approximating the multilayered structure of human skin. More recently, the scientists have incorporated neural networks into the fingertip, which they call TacTip. The neural networks help a robot quickly process what it's sensing and react accordingly — seemingly just like a real finger.

In our fingertips, a layer of nerve endings deforms when skin contacts an object and tells the brain what's happening. These nerves send "fast" signals to help us avoid dropping something and "slow" signals to convey an object's shape. TacTip's equivalent signals come from an array of pinlike projections underneath a rubbery surface layer that move when the surface is touched. The array's pins are like a hairbrush's bristles: stiff but bendable. Beneath that array is, among other things, a camera that detects when and how the pins move. The amount of bending of the pins provides the slow signal and the speed of bending provides the fast signal. The neural network translates those signals into the fingertip's actions, making it grip more tightly for example, or adjust the angle of the fingertip....

In a second project, Lepora's team added more pins and a microphone to TacTip. The microphone mimics another set of nerve endings deep within our skin that sense vibrations felt as we run our fingers across a surface. These nerve endings enhance our ability to feel how rough a surface is. The microphone did likewise when the researchers tested the enhanced fingertip's ability to differentiate among 13 fabrics.
The article points out that in testing, the artificial fingertip's output "closely matched the neuronal signaling patterns of human fingertips undergoing the same tests."

"Geothermal energy has long been the forgotten member of the clean energy family, overshadowed by relatively cheap solar and wind power, despite its proven potential," argues a new article in Fast Company. "But that may soon change — for an unexpected reason.

"Geothermal technologies are on the verge of unlocking vast quantities of lithium from naturally occurring hot brines beneath places like California's Salton Sea, a two-hour drive from San Diego..." As a geologist who works with geothermal brines and an energy policy scholar, we believe this technology can bolster the nation's critical minerals supply chain at a time when concerns about the supply chain's security are rising. Geothermal power plants use heat from the earth to generate a constant supply of steam to run turbines that produce electricity. The plants operate by bringing up a complex saline solution located far underground, where it absorbs heat and is enriched with minerals such as lithium, manganese, zinc, potassium, and boron. Geothermal brines are the concentrated liquid left over after heat and steam are extracted at a geothermal plant. In the Salton Sea plants, these brines contain high concentrations — about 30% — of dissolved solids.

If test projects now underway prove that battery-grade lithium can be extracted from these brines cost effectively, 11 existing geothermal plants along the Salton Sea alone could have the potential to produce enough lithium metal to provide about 10 times the current U.S. demand. Three operators at the Salton Sea geothermal field are in various stages of designing, constructing, and testing pilot plants for direct lithium extraction from the hot brines. At full production capacity, the 11 existing power plants near the Salton Sea, which currently generate about 432 megawatts of electricity, could also produce about 20,000 metric tons of lithium metal per year. At current prices, the annual market value of this metal would be more than $5 billion....

Geothermal power has the ability to complement solar and wind energy as a baseload power source — it is constant, unlike sunshine and wind — and to provide energy and mineral security. It could also offer a professional bridge for oil, gas, and coal employees to transition into the clean energy economy. The industry could benefit from policies like risk mitigation funds to lessen drilling exploration costs, grant programs to demonstrate innovations, long-term power contracts, or tax incentives.

Adding the production of critical metals like lithium, manganese, and zinc from geothermal brines could provide geothermal electrical power operators a new competitive advantage and help get geothermal onto the policy agenda.

An anonymous reader shares a report: In 2018, an international team of scientists announced a startling discovery: Buried beneath the thick ice of the Hiawatha Glacier in northwest Greenland is an impact crater 31 kilometers wide -- not as big as the crater from the dinosaur-killing impact 66 million years ago, but perhaps still big enough to mess with the climate. Scientists were especially excited by hints in the crater and the surrounding ice that the Hiawatha strike was recent -- perhaps within the past 100,000 years, when humans might have been around to witness it. But now, using dates gleaned from tiny mineral crystals in rocks shocked by the impact, the same team says the strike is much, much older. The researchers say it occurred 58 million years ago, a warm time when vast forests covered Greenland -- and humanity was not yet even a glimmer in evolution's eye.

Kurt Kjaer, a geologist at the Natural History Museum of Denmark and a co-author of the new study, says the new date is at odds with the team's initial impression, gleaned from ice-penetrating radar. "But this is the way science works and should work," he says. The date is a blow to a group of scientists that for more than a decade has advanced a controversial hypothesis that the Younger Dryas, a drastic, 1000-year cooling about 12,800 years ago, was triggered when a comet struck Earth. They had seized on the first Hiawatha paper as a smoking gun: The crater seemed about the right age, and it was in the right place -- near a region of the North Atlantic Ocean that heavily influences Northern Hemisphere climate. Now, says Brandon Johnson, a co-author and impact modeler at Purdue University, West Lafayette, "It's probably safe to put the Younger Dryas impact hypothesis back to rest for a while."

Electrek writes: Nearly a year ago, Electrek reported that scientists published a feasibility study about the benefits of erecting solar panels over canals. That study is about to become a reality in a [one-mile] pilot project in California.

The California Department of Water Resources, utility company Turlock Irrigation District, Marin County, California-based water and energy project developer Solar AquaGrid, and The University of California, Merced, are partnering on a pilot project named Project Nexus — a "nod to the water-energy nexus paradigm gaining attention among public utilities."
California has about 4,000 miles of canal transporting water to 35 million California, explains Roger Bales, a distinguished engineering professor at the University of California, Merced (who is working on the project). "It's the largest such system in the world.

"We estimate that about 1% to 2% of the water they carry is lost to evaporation under the hot California sun." In a 2021 study... we showed that covering all 4,000 miles of California's canals with solar panels would save more than 65 billion gallons of water annually by reducing evaporation. That's enough to irrigate 50,000 acres of farmland or meet the residential water needs of more than 2 million people....

Shading California's canals with solar panels would generate substantial amounts of electricity. Our estimates show that it could provide some 13 gigawatts of renewable energy capacity, which is about half of the new sources the state needs to add to meet its clean electricity goals: 60% from carbon-free sources by 2030 and 100% renewable by 2045.

Installing solar panels over the canals makes both systems more efficient. The solar panels would reduce evaporation from the canals, especially during hot California summers. And because water heats up more slowly than land, the canal water flowing beneath the panels could cool them by 10 degrees Fahrenheit, boosting production of electricity by up to 3%.

These canopies could also generate electricity locally in many parts of California, lowering both transmission losses and costs for consumers. Combining solar power with battery storage can help build microgrids in rural areas and underserved communities, making the power system more efficient and resilient. This would mitigate the risk of power losses due to extreme weather, human error, and wildfires....

Another benefit is curbing aquatic weeds that choke canals. In India, where developers have been building solar canals since 2014, shade from the panels limits growth of weeds that block drains and restrict water flow....

Building smart solar developments on canals and other disturbed land can make power and water infrastructure more resilient while saving water, reducing costs, and helping to fight climate change.
"The project is anticipated to break ground in fall 2022," writes Turlock Irrigation District, "and be complete by the end of 2024."

Slashdot reader Tangential shares what he describes as "an interesting article on Gizmodo discussing how we could easily contaminate other planets/moons as we explore them."

"Based on our recently demonstrated vulnerability to locally evolved bacteria and viruses, what will other worlds's pathogens do to us (and what will ours do to them?) What I also find interesting is what a small percentage of SciFi actually addresses this."

From Gizmodo's article: The year is 2034. Humans have sent a probe to Jupiter's moon Europa to drill through the icy surface and photograph the ocean beneath. In the few hours before it stops functioning, the probe returns images of shapes that could be some form of life. Scientists quickly organize a followup mission that will collect samples of that spot and bring them back to Earth. But, unknown to anyone, the first probe wasn't sterile — it carried a hardy bacteria that had survived even the mission's clean rooms. By the time the samples finally reach Earth years later, they're dominated by this bacteria, which has happily set up shop in Europa's dark, salty waters. Just like that, our first opportunity to study a truly alien ecosystem has been destroyed.

This is a nightmare scenario for NASA and other space agencies, and it's one they've worked intensely to avoid with every mission to another orb. But some researchers from a lesser-known branch of ecology argue that even the current strict standards aren't rigorous enough, and as more ambitious missions to other planets and moons get ready to launch, the risk of interplanetary contamination becomes more dire. They say we need to better plan for "forward contamination," in which our technology disseminates Earth microbes, as well as "back contamination," in which life from elsewhere hitches a ride to Earth.

In fact, we already have a playbook to lean on: the discipline of invasion science, the study of how species on our planet invade each other's ecosystems. "What I would say is that, given that there are now concrete plans in place to explore new areas that could have extant life — these pose a new set of risks that were not in play before," Anthony Ricciardi, a professor of invasion ecology and aquatic ecosystems at McGill University, told Gizmodo. "Invasion science has been applied to biosecurity at national and international levels. My colleagues and I believe that it could similarly guide biosecurity at the planetary or interplanetary scales."

Because of the groundbreaking technological advances of recent years, our ability to explore other worlds — from asteroids to planets to ocean moons — is expanding, and so are the risks that come with that. NASA plans to bring bits of Mars to Earth in the early 2030s, and missions to Titan and Europa, which could very well host life, are set to launch this decade.... Although the 2034 Europa tale is invented, there's plenty of precedent for it. We've likely accidentally brought drug-resistant bacteria into the Antarctic ecosystem already, infecting seabirds and seals.

Our lack of foresight and carelessness is driving mass extinctions on Earth — are we willing to do the same thing to the next inhabited world we touch?

The latest painting to receive the reconstructed-by-AI treatment is Gustav Klimt's 1900 painting "Philosophy". The Washington Post reports: For decades, only black-and-white photographs of "Philosophy" existed. Now, thanks to artificial intelligence, we can see the work in full color. But does the re-creation really look like the original? Does it even look like a Klimt? The new version, created by Google Arts and Culture using machine learning, shows a very different Klimt than you'd expect if you're familiar with "The Kiss" or "Portrait of Adele Bloch-Bauer I...."

"I don't know any better than Google what those paintings really look like, but I don't think that they looked like that," says Jane Kallir, longtime director of the Galerie St. Etienne in New York, which gave Klimt his first shows in the United States. "These things look like cartoons. They don't look like Klimt paintings.

"It's like people who try to clone their dogs. You can do it, but it's not the same dog."

The paintings are one of several recent attempts to use artificial intelligence to re-create lost art. The Rijksmuseum in Amsterdam used AI to reconstruct missing panels from the edges of Rembrandt's famous "Night Watch" and, over the summer, temporarily installed them alongside the real thing. A pair of researchers in the United Kingdom, who call themselves Oxia Palus, say they've rebuilt a Picasso nude that was hidden beneath "The Blind Man's Meal," using 3-D printing and AI. In October, an orchestra in Bonn, Germany, "played" Beethoven's 10th and unfinished symphony in full. The version was written by an algorithm. George Cann, co-founder of Oxia Palus, posits that artificial intelligence "could give us this parallel alternative universe of art that we never really quite had."

It's an alluring idea. Peek beneath a Picasso at an earlier painting under the surface layer and it's like you're peering into the artist's mind, eavesdropping on thoughts from a century ago. See a painting that was lost to catastrophe come back to life and it's like you've traveled back in time, reversed fate. But if any of this re-created universe of lost art, like "Philosophy," is inaccurate, the AI creators might not be resurrecting history but inadvertently rewriting it.... [F]or Kallir, there is little of Klimt in what she calls the "gaudy" re-creations, adding that the paintings would have been more subdued, with smoother transitions from one color to the next.

"If you've got a decent eye, and you look at the black-and-white reproductions and compare them to other paintings that were done around the same time, you can probably get a better idea of what they really look like," she says.

Recently a New York Times headlined asked "Is the four-day work week finally within our grasp?" Kickstarter, Shake Shack and Unilever's New Zealand unit are among those that have experimented with the four-day workweek, or have announced plans to. And after an experiment in Iceland supported the idea that the system improves worker well-being without reducing overall output, a majority of the country's workers have now moved to shorter workweeks, or will gain the right to... Roughly 1% of Iceland's working population was involved in its trials of shorter workweeks for equal pay, which ran for several years starting in 2015.

"The trials were successful," concluded a recent research report on the experiment. "Participating workers took on fewer hours and enjoyed greater well-being, improved work-life balance and a better cooperative spirit in the workplace — all while maintaining existing standards of performance and productivity...." And the extra day off means fewer commuting days, which saves time and reduces environmental impact....

Proponents of four-day weeks say the key is to rein in meetings. "You have better discipline around meetings. You're a lot more thoughtful in how you use technology," said Alex Soojung-Kim Pang, author of "Shorter," a book about the four-day workweek. He also said that a shorter week requires workers to set aside time for focused work and refrain from email or other communications during that time.

"To paraphrase William Gibson, the four-day week is already here for most companies," said Pang, an organizational strategy consultant in Menlo Park, California. "It's buried under a whole bunch of rubble of outmoded practices and bad meetings. Once you clear that stuff away, then it turns out the four-day week is well within your grasp."
And now one commentator in Newsweek reports that 83% of U.S. workers favor a shorter work week. But there's also a business case for the change, since a Microsoft experiment with a four-day work week in Japan "led to a 40 percent improvement in productivity, as measured by sales per employee...." The strongest argument for a shorter work week is that it doesn't actually require a sacrifice. Although the average American works 8.8 hours a day, not much of this time is actually spent working. If a worker is in the office but isn't working, what is the purpose of them being there? Minutes spent chatting by the water cooler, checking social media and making snacks compound into hours that could be better spent elsewhere. As noted by the historian C. Northcote Parkinson, famous for "Parkinson's Law," work "expands so as to fill the time available for its completion." I think he's right.

Deadlines focus work, and focused work is better work. It's the quality, and not the quantity, of our work that matters.... As we near the post-COVID juncture, I believe it's time to refocus our sights on the forgotten promise of the industrial revolution — to finally help employees find a better work-life balance and actually increase business' productivity and bottom line at the same time. Four great work days are always better than five average days.
It's happening. "The coronavirus pandemic has sped up a transition into more flexible and diverse working hours around the world, opening up ways of working that were unthinkable just a few years ago," reports Reuters. (The traditional model of how we work has been broken," Meghana Reddy, vice president of video messaging service Loom, told the Reuters Next conference.")

And an article in Forbes reminds us that last month Britain's Atom Bank adopted a four-day week for most of its 430 employees, reducing working hours to 34 hours per week from 37.5 hours without reducing pay. "There's even talk at the congressional level: U.S. Rep. Mark Takano, a Democrat from California, introduced a bill in July to reduce the standard work week from 40 hours to 32. The bill has 13 co-sponsors...." The four-day work week will take hold because it embodies the spirit of our times, because workers demand it, and because businesses that implement it will thrive...

Years from now we will look back on our pre-pandemic work habits and lifestyles and wonder why we worked the way we did. We will cringe to recall how we sacrificed evenings and weekends and friendships and family to work all the time. We will ponder how we allowed ourselves to sink beneath relentless professional demands and digital distractions without even noticing we were drowning.

The four-day work week is just one of the corporate experiments that will define the life-work revolution and ultimately the future of work.

Novelist Dave Eggers has just published a sequel to his 2013 dystopian tale of a tech company called The Circle — in which a low-tech crusader now tries to destroy the most powerful tech company in the world. Ars Technica quips that "When big tech rules all, don't say Dave Eggers didn't warn us." The Every quickly asserts itself as a logical progression from its literary forebear. Moving past simply recording everything, this world now revolves around measuring everything so that technology can spit out directions... The Every's health app tells you when to get up and jump at your desk. The Every's storage solution will digitize all your belongings as 3D-printable files so you can incinerate your waste and lower your carbon footprint. Media from The Every is driven by data-tracking technology that can tell when readers/viewers/listeners tend to abandon ship; it then tells creators how to improve...

"The Circle was more about surveillance and whether privacy is possible," said Eggers. "This is more about whether we want to exercise free will on a daily basis, or are we happier to have these algorithms feed us and free us of all these decisions and anxieties? What if there was one monopoly who promised to make you your best self so long as you basically gave up control over every decision?"

Though its themes are no laughing matter, The Every is littered with the smirk-inducing ideas you'd expect from Eggers. Each matter-of-fact aside about how life has evolved from our present day into this book's near future is a comedic dystopian gem... You don't have to go far these days to see how tech-reliant society has become; it's painfully evident that our world is quite comfortable with outsourcing decisions and plans to the algorithm. In this light, The Every isn't blazing new trails with its central themes, but few works will so reliably stop you mid-sentence or post-chapter for a moment of reflection. And that's because Eggers has a gift. Consistently, his ideas are amusing and laugh-out-loud funny, but there's also a deep sense of reality beneath them. When that clicks for you during a reading session, you arrive at the realization that the real world isn't so far behind the Every world.

Comedy can turn into horror quickly.
"The best way to hold a mirror up to the way we live now is to turn the absurdity up just a little more, and we can reflect back on how we're living now," Eggers tells Ars Technica. "Then, maybe, there's a fork in the road where we say, 'Well, we actually don't want that, if that comes to fruition, maybe we'll fight back.' That's about the only hope you can have writing something like this."

Ars Technica notes that Eggers and his publisher McSweeney's "took extra care to sell through places beyond Amazon... 'It felt like a book about the increasing saturation and reach of a monopoly was a good opportunity to make a bit of a point: We still have a choice for the time being. You can go into [a local store like] Book People and buy a book there and support the local economy as opposed to giving money to the apex predator. If we want retail diversity, we need to feed smaller operations."

The article adds that Eggers doesn't have a smartphone, and he tries to stay offline.

sciencehabit shares a report from Science.org: In late 1791 and early 1792, on the eve of the French Revolutionary Wars, Queen Marie Antoinette engaged in a secret correspondence with her confidant and rumored lover, Swedish Count Axel von Fersen. Nearly 50 letters from that exchange survive at the French National Archives. But certain passages in 15 of the letters were unreadable, obscured by redactions made with swirls of dark ink. Now, researchers have revealed the words beneath 45 of these alterations using x-ray technology. They have also discovered the censor's identity: von Fersen, himself. The idea that von Fersen made the redactions is "a revelation," says Catriona Seth, a professor of French literature at the University of Oxford who was not involved with the work. Historians had thought the letters were censored in the second half of the 19th century -- most likely by von Fersen's great-nephew -- to protect the writers' reputations. Now, she says, scholars will need to rethink the cover-up -- and the reasons behind it.

The newly legible passages are largely sentimental, phrases like "made my heart happy," and "you that I love." Comments on politics and world events, meanwhile, remain uncensored. But even these seemingly intimate phrases don't definitively tell historians anything new about Marie Antoinette and von Fersen's relationship, Seth says. Scholars, she notes, already knew Marie Antoinette had "a very deep affection for him." Still, she adds, the letters offer "direct insight into the thoughts and feelings of Marie Antoinette." In the future, the techniques in this study could be used in combination with machine algorithms to automatically transcribe old texts, the researchers say, making it easier to understand these important documents -- and others like them. The researchers published their findings in the journal Science Advances.

"A quake-measuring device on Mars is providing the first detailed look at the red planet's interior, revealing a surprisingly thin crust and a hot molten core beneath the frigid surface," reports the Associated Press: In a series of articles published this week, scientists reported that the Martian crust is within the thickness range of Earth's. The Martian mantle between the crust and core is roughly half as thick as Earth's. And the Martian core is on the high side of what scientists anticipated, although smaller than the core of our own nearly twice-as-big planet.

These new studies confirm that the Martian core is molten. But more research is needed to know whether Mars has a solid inner core like Earth's, surrounded by a molten outer core, according to the international research teams. Stronger marsquakes could help identify any multiple core layers, scientists said Friday. The findings are based on about 35 marsquakes registered by a French seismometer on NASA's InSight stationary lander, which arrived at Mars in 2018...

InSight has been hit with a power crunch in recent months. Dust covered its solar panels, just as Mars was approaching the farthest point in its orbit around the sun. Flight controllers have boosted power by using the lander's robot arm to release sand into the blowing wind to knock off some of the dust on the panels. The seismometer has continued working, but all other science instruments remain on hiatus because of the power situation — except for a German heat probe was declared dead in January after it failed to burrow more than a couple feet (half a meter) into the planet.

The three studies and a companion article appeared in Thursday's edition of the journal Science.