In the early 1990s, fewer than 1,000 threatened chum salmon returned to this Washington watershed; recent returns average 32,600 a year as a $9.7 million river restoration nears completion

chum salmon Representative image In the early 1990s, fewer than 1,000 threatened summer-run chum salmon made it back to the Big Quilcene River on Washington’s Olympic Peninsula each year. Decades of logging, road building and habitat degradation had left the river choked with sediment, its gravel spawning beds buried and its side channels disconnected. Today,…

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Quote of the day by Barbara McClintock: “If you know you are on the right track, if you have this inner knowledge, then…” |

There are moments when pursuing an idea can feel lonely, particularly when other people cannot see what you see. Barbara McClintock understood that feeling well. The American geneticist spent years investigating patterns in corn genetics that initially challenged the scientific thinking of her time. Her words are not simply about refusing to listen to criticism….

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Researchers analysing hardened plaque from eight people buried in Edo-era Osaka detected 38 dietary proteins, including luxury red sea bream and cold-water fish imported through Japan’s shipping networks

Nearly 400 years ago, people living in Osaka had no refrigerators, supermarkets or modern food supply chains. Yet an unusual scientific discovery suggests that their diets were far more varied than expected. Researchers analysing hardened dental plaque from eight people buried at the Umeda cemetery in Osaka identified 38 dietary proteins from 17 types of…

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Divers turned a floating wind turbine off Spain into an underwater farm; oysters, clams, mussels and green algae now grow beneath it |

Far out in the Atlantic, the concrete base of a floating wind turbine has been given an unusual second role. Instead of serving only as the underwater support for renewable energy equipment, parts of the structure are now carrying ropes, nets and collectors designed to grow marine species. Commercial divers attached equipment for oysters, clams,…

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In the 1970s, just 14 giant tortoises remained on Española; now 3,000 are restoring vegetation and bringing albatrosses back to nesting grounds |

On Española, one of the smaller islands in the Galápagos, the landscape is being reshaped by animals that spend much of their time moving slowly through it. Giant tortoises push through grasses, knock down vegetation and leave broad paths behind them as they travel. Their effect is easy to miss if viewed as ordinary grazing….

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Astronomers hear a mysterious ‘hum’ across the universe; one explanation begins with strange dark stars 13 billion years ago

Astronomers may have found a new way to investigate one of the biggest mysteries in cosmic history: how the Universe’s first supermassive black holes were born. A faint gravitational-wave “hum” detected through networks of pulsars could contain clues about objects that existed more than 13 billion years ago. A new study by researchers at Colgate…

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Nancy Grace Roman Space Telescope: From strange worlds to rare planets: Nasa’s Roman Telescope begins its cosmic hunt

A SpaceX Falcon Heavy rocket with the space observatory Roman Telescope lifts off from launch complex 39A at the Kennedy Space Center Nasa‘s newest flagship space observatory, the Nancy Grace Roman Space Telescope, blasted off from Florida on Sunday on a mission to search for planets beyond the Solar System and investigate some of the…

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In 2019, MrBeast was challenged to plant 20 million trees; today #TeamTrees has planted over 25 million worldwide

Jimmy Donaldson, also known as MrBeast is the world’s most famous and subscribed YouTuber. He is known for going big on his efforts, rather than just donating a sum, he often involved himself in philanthropic projects. The YouTuber is known for his over-the-top competitions and giveaways that go viral, which have garnered him over 514…

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In 1990, the northern spotted owl became a symbol of America’s logging wars; 36 years later, scientists say it is already functionally extinct across large swaths of its range

In 1990, a small bird became an unlikely symbol of one of America’s fiercest environmental battles. The northern spotted owl was listed as threatened under the Endangered Species Act, putting the future of vast stretches of old-growth forest in the Pacific Northwest at the centre of a bitter fight between environmentalists and the logging industry.Thirty-six…

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A Chicago physicist proposed a way to create quantum images 20 years ago; after two decades waiting for experimental proof, superconductors have finally produced the effect he predicted

Representational image of quantum imaging showing electron waves around an atom. (AI photo) Dirk Morr, a physics professor at the University of Illinois Chicago (UIC), has developed a quantum imaging strategy that uses superconductors as tiny projectors. The research, published in Nature Physics, provides experimental support for an idea Morr first proposed two decades ago.Morr…

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