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Category: Science/mathematics

Has Earth’s inner core stopped its strange spin?

Has Earth’s inner core stopped its strange spin?

Nature reports: Thousands of kilometres beneath your feet, Earth’s interior might be doing something very weird. Many scientists think that the inner core spins faster than the rest of the planet — but sometime in the past decade, according to a study, it apparently stopped doing so. “We were quite surprised,” say Yi Yang and Xiaodong Song, seismologists at Peking University in Beijing who reported the findings today in Nature Geoscience. The results could help to shine light on the…

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‘Disruptive’ science has declined — and no one knows why

‘Disruptive’ science has declined — and no one knows why

Nature reports: The number of science and technology research papers published has skyrocketed over the past few decades — but the ‘disruptiveness’ of those papers has dropped, according to an analysis of how radically papers depart from the previous literature. Data from millions of manuscripts show that, compared with the mid-twentieth century, research done in the 2000s was much more likely to incrementally push science forward than to veer off in a new direction and render previous work obsolete. Analysis…

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Can geoengineering fix the climate? Hundreds of scientists say not so fast

Can geoengineering fix the climate? Hundreds of scientists say not so fast

The Guardian reports: As global heating escalates, the US government has set out a plan to further study the controversial and seemingly sci-fi notion of deflecting the sun’s rays before they hit Earth. But a growing group of scientists denounces any steps towards what is known as solar geoengineering. The White House has set into motion a five-year outline for research into “climate interventions”. Those include methods such as sending a phalanx of planes to spray reflective particles into the…

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The Romantics who laid the foundations of modern consciousness

The Romantics who laid the foundations of modern consciousness

Andrea Wulf writes: In September 1798, one day after their poem collection Lyrical Ballads was published, the poets Samuel Taylor Coleridge and William Wordsworth sailed from Yarmouth, on the Norfolk coast, to Hamburg in the far north of the German states. Coleridge had spent the previous few months preparing for what he called ‘my German expedition’. The realisation of the scheme, he explained to a friend, was of the highest importance to ‘my intellectual utility; and of course to my…

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The Energy Department’s fusion breakthrough: It’s not really about generating electricity

The Energy Department’s fusion breakthrough: It’s not really about generating electricity

John Mecklin writes: This week’s headlines have been full of reports about a “major breakthrough” in nuclear fusion technology that, many of those reports misleadingly suggested, augurs a future of abundant clean energy produced by fusion nuclear power plants. To be sure, many of those reports lightly hedged their enthusiasm by noting that (as The Guardian put it) “major hurdles” to a fusion-powered world remain. Indeed, they do. The fusion achievement that the US Energy Department announced this week is…

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Nuclear fusion in lab finally makes more energy than it uses

Nuclear fusion in lab finally makes more energy than it uses

Science News reports: Scientists have finally managed to bottle the sun. Researchers with the National Ignition Facility in Livermore, Calif., have ignited controlled nuclear fusion that resulted in the net production of energy. The long-awaited achievement, to be announced December 13 by U.S. Department of Energy officials, is the first time a lab has been able to reproduce the reactions in the sun in a way that leads to more energy coming out of the experiment than going in. “This…

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‘Forever chemicals’ may pose a bigger risk to our health than scientists thought

‘Forever chemicals’ may pose a bigger risk to our health than scientists thought

Science News reports: For decades, chemicals that make life easier — your eggs slide out of the frying pan, stains don’t stick to your sofa, rain bounces off your jackets and boots — have been touted as game changers for our busy modern lives. “Better things for better living … through chemistry,” was the optimistic slogan coined by DuPont, the company that invented the widely used chemical coating Teflon. But this better living has come at a cost that is getting…

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Why doesn’t physics help us understand the flow of time?

Why doesn’t physics help us understand the flow of time?

Gene Tracy writes: I have a memory, a vivid one, of watching my elderly grandfather wave goodbye to me from the steps of a hospital. This is almost certainly the memory of a dream. In my parent’s photo album of the time, we have snapshots of the extended family – aunts, uncles, and cousins who had all travelled to our upstate New York farm to celebrate my grandparents’ 50th wedding anniversary. I am in some of the photos along with…

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COVID-19 origins: Investigating a ‘complex and grave situation’ inside a Wuhan lab

COVID-19 origins: Investigating a ‘complex and grave situation’ inside a Wuhan lab

By Katherine Eban, Vanity Fair, and Jeff Kao, ProPublica “A Secret Language of Chinese Officialdom” Toy Reid has always had a gift for languages — one that would carry him far from what he calls his “very blue-collar” roots in Greenville, South Carolina. In high school, Spanish came easily. At nearby Furman University, where he became the first person in his family to attend college, he studied Japanese. Then, “clueless but curious,” as he puts it, he channeled his fascination…

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James Lovelock and the death of scientific independence

James Lovelock and the death of scientific independence

Roger Highfield writes: As the planet lurches towards a climate emergency and its life support systems falter, the need for visionary thinkers with fresh insights and big ideas has never been more pressing. No wonder, then, that the world mourned the death earlier this year of James (‘Jim’) Lovelock, whose Gaia theory provided a new framework to think about nature, one that changed the way we regard our relationship with Earth. Lovelock contributed to many fields, such as environmental science,…

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How migrating birds use quantum effects to navigate across vast distances

How migrating birds use quantum effects to navigate across vast distances

Peter J. Hore writes: Imagine you are a young Bar-tailed Godwit, a large, leggy shorebird with a long, probing bill hatched on the tundra of Alaska. As the days become shorter and the icy winter looms, you feel the urge to embark on one of the most impressive migrations on Earth: a nonstop transequatorial flight lasting at least seven days and nights across the Pacific Ocean to New Zealand 12,000 kilometers away. It’s do or die. Every year tens of…

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Chaos researchers can now predict perilous points of no return

Chaos researchers can now predict perilous points of no return

Ben Brubaker writes: Predicting complex systems like the weather is famously difficult. But at least the weather’s governing equations don’t change from one day to the next. In contrast, certain complex systems can undergo “tipping point” transitions, suddenly changing their behavior dramatically and perhaps irreversibly, with little warning and potentially catastrophic consequences. On long enough timescales, most real-world systems are like this. Consider the Gulf Stream in the North Atlantic, which transports warm equatorial water northward as part of an…

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NASA to crash $330m spacecraft into asteroid to see if impact can alter course

NASA to crash $330m spacecraft into asteroid to see if impact can alter course

The Guardian reports: In a few weeks, Nasa controllers will deliberately crash their $330m Dart robot spacecraft into an asteroid. The half-tonne probe will be travelling at more than four miles a second when it strikes its target, Dimorphos, and will be destroyed. The aim of this kamikaze science mission is straightforward: space engineers want to learn how to deflect asteroids in case one is ever discovered on a collision course with Earth. Observations of Dart’s impact on Dimorphos’s orbit…

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Undersea internet cables can detect earthquakes — and may soon warn of tsunamis

Undersea internet cables can detect earthquakes — and may soon warn of tsunamis

Jeffrey Marlow writes: Somewhere beneath the Adriatic Sea, a rogue block of the African tectonic plate is burrowing under southern Europe, stretching Italy eastward by a few millimetres each year. On October 26, 2016, the stress triggered an earthquake in the Apennine Mountains, one in a series of quakes which toppled buildings in Italian towns. On the day of the tremor, Giuseppe Marra, a principal research scientist at the National Physical Laboratory in Teddington, England, was running an experiment that…

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Scientists say it’s ‘fatally foolish’ to not study catastrophic climate outcomes

Scientists say it’s ‘fatally foolish’ to not study catastrophic climate outcomes

Inside Climate News reports: As global greenhouse gas emissions continue to rise, some climate scientists say it’s time to start paying more attention to the most extreme, worst-case outcomes, including the potential for widespread extinctions, mass climate migration and the disintegration of social and political systems. “Facing a future of accelerating climate change while blind to worst-case scenarios is naive risk management at best and fatally foolish at worst,” an international team of researchers wrote this week in a Perspective…

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Four revelations from the Webb telescope about distant galaxies

Four revelations from the Webb telescope about distant galaxies

Nature reports: NASA built its state-of-the-art James Webb Space Telescope to peer into the distant Universe and back towards the dawn of time — and it’s already doing so spectacularly. In the two weeks since Webb’s first science images and data became available for astronomers to work with, they have reported a flood of preliminary discoveries, including multiple contenders for what could be the most distant galaxy ever seen. Webb’s images reveal a wealth of galaxies glimmering in the distant…

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