Gizmodo reports: Roughly 84.4% of the world's coral reefs suffered bleaching-levels of heat stress during the last major marine heat wave from January 2023 to September 2025, with over half already lost compared to coral coverage in the 1950s... But there's some good news, thanks to a new study published this Wednesday in the journal Science Advances: Marine ecologists at Stanford have discovered that bleached corals can be revived via contact with a healthy coral neighbor, who (like a good neighbor) shares their photosynthetic, symbiotic algae (Symbiodiniaceae) with their peers. "This incredible new result — that fast and full recovery is possible in bleached coral — can inspire solutions that eventually may be scalable," [Fiorenza Micheli, a marine ecologist with Stanford's Center for Ocean Solutions and study co-author, told the journal Nature]... Unlike their controls, bleached coral in contact with healthy coral recovered in just eight weeks... [T]he surprise discovery of this method alongside the other techniques that marine conservationists are now actively pursuing — including the successful deep-freezing and revival of at-risk coral sampled from Hawaii — could offer threatened reefs the lifeline they need. Coral contact could super-charge other efforts, like the selective breeding of heat-tolerant corals and the cultivation of protected coral nurseries

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Google is expanding its Android Earthquake Alerts System from 98 to more than 200 regions worldwide, using smartphone sensors to detect early earthquake activity and warn users before potentially dangerous shaking begins. The update also enhances the system's "Be Ready" alerts with estimated earthquake magnitudes, epicenter information, maps showing affected areas, and additional safety guidance. From a Google blog post: Be Aware: A straightforward alert for estimated light shaking, letting you know an earthquake has been detected nearby. Be Ready: A detailed alert for stronger shaking, alerting you to prepare to take action. Take Action: A full-screen alert for moderate to heavy shaking, giving you immediate advice on how to stay safe. We've built-out our Be Ready alert with new helpful guidance. In the coming months, you'll see a map with a radius of where we've detected shaking, estimated earthquake magnitude, action you can take, and a button to learn more about the earthquake as information comes in.

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Earth’s rotation subtly changes the length of the day. Now our clocks won’t change with it — at least not for a very long time.

© Miguel Román, Joshua Stevens/NASA's Goddard Space Flight Center

sciencehabit shares a report from Science Magazine: A physicist has put a definite date on Doomsday," The New York Times wrote on November 4, 1960. "He calculates that it will come on Friday the Thirteenth in November, 2026 A. D. On that date, or thereabouts, the human population will have expanded so far as to approach infinity and thus will automatically annihilate itself." The newspaper was right -- but the prediction was wrong. That week, Austrian American physicist Heinz von Foerster and two colleagues published a paper in Science with the stunningly succinct title "Doomsday: Friday, 13 November, A.D. 2026." The work was based on a simple observation: The time it took for the human population to double in size kept getting shorter. Using population estimates from about 400 B.C.E. until 1958 C.E., the authors -- all from the department of electrical engineering at the University of Illinois Urbana-Champaign -- came up with an equation that best described the trend. If things continued the way they were going, the number of humans on Earth would rise faster and faster, reaching more than 25 billion by 2020. The researchers didn't calculate when humanity would run out of food, land, or energy. They just concluded that at some point this year, the equation ceased to give meaningful results because the predicted population shot toward infinity. That was their doomsday. "Our great-great-grandchildren will not starve," they wrote. "They will be squeezed to death." The exact date was somewhat arbitrary, however. The formula solved to 2026.87 plus or minus 5.5 years, and The New York Times reported that von Foerster "searched the center of this doom-time span for an appropriate date and found that a Friday the Thirteenth would fall conveniently in November of 2026." (November 13 also happened to be his birthday.) [...] [D]emographers, annoyed by what they saw as a provocation by outsiders, pointed out obvious flaws. For example, the time it takes for the number of humans to double could get a lot shorter, but certainly not shorter than the 9 months it takes for a baby to develop. "In view of the comments that subsequently were published in this journal, an extensive discussion of this article does not seem to be required," public health expert Harold Dorn drily noted in Science 2 years after von Foerster's article was published. The forecast would set a record, he predicted, "for the short length of time required to demonstrate its unreliability." "The failure of the Doomsday equation is ultimately a cautionary tale about the dangers of extrapolating from historically exceptional circumstances," writes economist Javier Birchenall of the University of California, Santa Barbara writes in a Perspective published in Science today.

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Every charted light on the planet, on its real cycle. [via Kottke, and part of mapped.earth]

Swiss glaciers lost 5.5% of their ice volume in the first eight months of 2026, bringing total losses since 2021 to 19.4%. Researchers say some glaciers are now collapsing from within as meltwater carves out large cavities. The Guardian reports: Matthias Huss, a glaciologist at ETH Zurich and lead author of the report, said many people do not realize how fast glaciers are retreating, or that just one generation ago some now-barren sites used to sit beneath hundreds of meters of ice. The scientists have not yet compiled a formal tally of lost glaciers this year but said they had witnessed the death of a number of small ones. "I visited one last week and it's so impressive to stand in this moonlike landscape where there was a big layer of ice -- an extensive glacier -- just a few years ago," said Huss. "And now it's a rock desert where there's some scattered blocks of old ice still lying around and melting on the hot rocks." The report, a collaboration between the Swiss Glacier Monitoring Network and the Swiss Commission for Cryosphere Observation, found the mean thickness of individual glaciers fell by between 2.5 metres and 4 metres in 2026. Huss said scientists were increasingly seeing glaciers collapse from the inside -- the result of internal streams beneath the ice that excavate caverns -- rather than simply retreating from surface heat. [...] Analysis published by MeteoSwiss on Tuesday found the summer half-year from April to September was the hottest and driest it had been since records began in 1864. In that time, humanity has filled the atmosphere with 1.8tn tons of carbon dioxide and heated the planet by about 1.4C.

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fjo3 shares a report from The Guardian: Communities across California are rushing to prepare for the imminent arrival of the so-called "Kelvin wave," a massive underwater band of warm water threatening to inundate swaths of the vast North American shoreline. The wave is nearing southern California and expected to reach the San Francisco Bay Area by early October, as it crawls toward Alaska. Waters could rise by a foot along the California coast, according to scientists, who have warned that this could dramatically double the 8-12in rise in sea levels already caused by climate change over the last century. The Kelvin wave doesn't climb and crash like a typical ocean wave; rather, it swells the tides from beneath the surface. It's effectively a massive slosh of warm water, driven by El Nino conditions, that moves across the Pacific before colliding with the South American coastline and surging north. It also won't transport water in the way a tsunami might, but creates conditions that enable higher sea levels to linger. On their own, Kelvin waves aren't always hazardous, according to Mike Jacox, a research oceanographer with the National Marine Fisheries Service, though they can reduce the growth of phytoplankton that form the base of the marine food web. "But when there are very high tides or storm surges, their effects can be amplified," he said. If the rising waters coincide with other climatic events, such as rainstorms and high tides, the phenomenon could swallow beaches, chew away bluffs and coastlines, and submerge streets, homes and businesses. "This coming Kelvin wave is just the beginning," said Dr Jonathan Warrick, a research geologist at the US Geological Survey. "The thing to look out for is what will happen in January, February and March -- that's when we get the biggest storms, we get our largest waves and we have some very large tides." If these events align, their effects will compound, setting the stage for a tumultuous winter. Together, Warrick said, the systems will pack a far bigger punch. "When it comes to these storms and the tides," he said, "we really are kind of rolling the dice."

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fjo3 quotes a report from The Guardian, written by Tove Danovich: Every year, the night sky is becoming 10% brighter. Eighty percent of people live under light-polluted skies. And while the UN declared a healthy environment -- clean air, clean water -- to be a human right, I believe we also all have a right to darkness as well. This doesn't mean turning off every streetlamp. But do we really need bright white floodlights at the front of every garage? Replacing lights with ones that are bright enough to do the job -- and no brighter -- might make it so I wouldn't have to get in my car and drive for hours to see the night sky as it actually shines above us. To preserve the darkness would mean rules and enforcement around the warmth of the lights, where they point, and how bright they can be. It would mean not putting in three lights when one would do. If we recognized that darkness is something we need, we'd become more careful about chasing it away. [...] Access to darkness is about more than stargazing. The night is its own habitat. Artificial lights confuse animals who use the moon to navigate, whether they're baby sea turtles navigating toward a parking lot instead of the ocean or moths who fly in circles around a lightbulb. Lightning bugs and frogs need darkness to complete their courtship rituals. Migrating birds get thrown off course by the bright lights of big cities. But the effects of light pollution linger even after it's daylight again, becoming visible. Research has shown light pollution is breaking the relationship between plants and pollinators, changing the time of year trees break into flower, and disrupting circadian rhythms for all living creatures. This includes humans. Whether it's artificial lights indoors or creeping in through the window at night, studies have found that we need darkness in order to rest, recover and stay healthy.

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The current El Nino has already surpassed the highest Pacific temperature anomaly recorded in the modern era, reaching 3.05C above the 1991-2020 average months before its expected peak. The commonly used ONI measure is also on the verge of breaking the 2015 record. Forecasts cited by The Guardian suggest the event could reach about 4.0C later this year. From the report: The latest data shows the temperature rise at the heart of El Nino in the Pacific Ocean has now reached 3.05C. That is higher than the 3.02C set in late November 2015, the previous high set in the 150 years of modern records. This temperature is measured against the average of 1991-2020. The preferred measure of most meteorologists uses a 30-year rolling average as a reference and so takes account of human-caused global heating. This metric, called ONI (Nino3.4), is on the brink of breaking the record, just one-hundredth of a degree below the 2015 record. Both metrics are underpinned by data from the US National Oceanic and Atmospheric Administration (NOAA). The most recent forecasts predict a peak of 4.0C in November and December, according to the average of 14 different models assessed by climate scientist Zeke Hausfather. That is a level so far above previous events that Hausfather called it "mind-blowing," while others have described it as "Godzilla-level." Any temperature rise above 0.5C is deemed an El Nino; above 2C is officially called a "very strong" El Nino -- often referred to as a "super" El Nino. The current El Nino is likely to be the largest in at least 1,000 years and will pile extra heat into an atmosphere in which temperatures are already rising rapidly due to human-caused global heating. This double whammy means 2027 is expected to "blow apart" previous records and become the hottest year ever recorded.

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Kim Stanley Robinson won't read aloud his climate disaster scene from 'The Ministry for the Future' - "As America celebrates its 250th anniversary, Robinson says he has been invoking the American Revolution in discussions about climate change. Despite declaring independence from Britain in 1776, it wasn't until 1783 — when a peace treaty was signed after years of brutal battles — that the country truly became a nation. 'The story of the American Revolution is lose, lose, lose, lose, lose, win,' said Robinson. 'So where did the win come from? It came from keeping to fighting despite the losses.'" (previously)

also btw...

• Scientists hope deeper-rooted soybeans can withstand climate extremes and store more carbon - "Research scientist Ashish Rajurkar kneels in the dirt, lifting a large clod of soil tangled around a soybean plant. He knocks away pieces of earth from the plant's roots, which slope straight down instead of out to the side like typical soybean plants. Researchers hope roots like these could help crops withstand some effects of climate change while also drawing more carbon from the atmosphere and storing it underground."
• The Iran war is driving clean energy development. It's not enough to help the planet, yet - "When the U.S. and Israel launched the war in February, some backers of renewables opined it could drive a green transition as oil and gas prices spiked. So far, more than 30 governments have enacted policies to move away from fossil fuels or improve energy efficiency. Yet at the same time, global emissions of greenhouse gases increased slightly and investments in clean energy fell compared to the same period last year."
• Worsening El Nino threatens Asia with drought, potentially raising food prices globally - "El Nino is part of a natural climate cycle of warming ocean temperatures, but this year's is expected to reach new extremes of drought, heat waves, flooding and other climate-related disruptions in South America, Africa and Asia."
• Major gaps remain to tripling global renewable energy capacity - "The world must build more than 6 terawatts of renewable power in the next five years — more than all previous years combined — to deliver on a goal to triple global renewable energy capacity by 2030, according to a new report." (China's clean tech exports prevented more than the UK's annual emissions)
• Climate finance needs an overhaul - "For developing countries, more green tech capital doesn't always translate to a cheaper and cleaner energy system." (Inside China's $7 Trillion Green Finance Market)
• Electricity could meet a third of global consumption by 2035 - "Electricity could cost-effectively meet a third of the world's energy consumption by 2035 based on existing technologies and pre-war energy prices, putting a proposed goal to boost electrification within 'striking distance,' the International Energy Agency found. High energy prices caused by the Middle East conflict could make even more of today's energy demand economical to electrify, the Paris-based agency said in a new analysis."
• Carbon Removal Falls Short as World Blows Past 1.5C Target - "Taking CO2 from the atmosphere is seen as necessary to mitigate climate change."

meanwhile...

• The Geothermal Energy Wild Card Is Getting Wilder - "Following a long term R&D program supported by the US Department of Energy, next-generation geothermal systems are forging into new territory, aided in part by methods borrowed from the oilfield services industry along with advanced exploration technologies and speedier, cost-cutting drilling systems." (DOE Selects Fervo, Zanskar and Quaise as Part of $99M Funding to Advance Next-Gen Geothermal)
• Google-backed energy outfit brings 33 MW of 4 GW geothermal potential online in Utah - "Fervo Energy aims to have 100 MW online by New Year and half a gigawatt by 2028."
• Company to drill deep beneath Newberry Caldera in search of geothermal energy - "A second company is drilling for geothermal energy south of Newberry National Volcanic Monument, south of Bend, with plans to build a 50-megawatt power plant by 2030."

Thousands of planets have been discovered beyond our solar system, offering clues to where life might thrive and whether Earth is truly unique.