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By Ella Nilsen, Andrew Freedman, CNN (CNN) — In one of its most significant reversals on climate policy to-date, the Trump administration on Tuesday proposed to repeal a 2009 scientific finding that human-caused climate change endangers human health and safety, EPA Administrator Lee Zeldin announced. If successful, the repeal could strip away the federal government’s

By Ella Nilsen, Laura Paddison, CNN (CNN) — The Trump administration fired the last of the US climate negotiators earlier this month, helping cement America’s withdrawal from international climate diplomacy. It may also have handed a huge victory to China. The elimination of the State Department’s Office of Global Change — which represents the United

By Lianne Kolirin, CNN (CNN) — A 4,000-year-old handprint has been discovered on a clay model used for offerings in an Ancient Egyptian tomb. Researchers from Cambridge University’s Fitzwilliam Museum, in the United Kingdom, stumbled upon the imprint while preparing for an exhibition, which is set to open this fall. It was found on the

By Katie Hunt, CNN (CNN) — Neanderthals had a voracious appetite for meat. They hunted big game and chowed down on woolly mammoth steak as they huddled around a fire. Or so thought many archaeologists who study the Stone Age. Fresh meat was far from the only thing on the menu, according to a growing

By Ashley Strickland, CNN (CNN) — The asteroid known as 2024 YR4 is out of sight yet still very much on scientists’ minds. The building-sized object, which initially appeared to be on a potential collision course with Earth, is currently zooming beyond the reach of telescopes on its orbit around the sun. But as scientists

By Laura Paddison, CNN (CNN) — The soupy, smothering extreme heat that has scorched parts of the Northern Hemisphere this summer takes a hard toll on our bodies. It can make you feel nauseous, woozy and dehydrated. It can have pernicious health effects on multiple organs. But there’s another, less well-known, impact of extreme heat:

By Kameryn Griesser, CNN (CNN) — Paleontologists have discovered remarkable fossils in the Grand Canyon that reveal fresh details about the emergence of complex life half a billion years ago. The newfound remains of fauna from the region suggest that it offered ideal conditions for life to flourish and diversify, in a “Goldilocks zone” between

By Mindy Weisberger, CNN (CNN) — When a plant is stressed, it doesn’t keep quiet about it. You won’t hear the plant’s cry because it’s in the ultrasonic range — too high-pitched for human ears — but, for decades, scientists have been using special devices to listen in. For the first time, a team of

By Jack Guy, CNN (CNN) — Archaeologists have discovered the remains of a medieval knight, buried under a shuttered ice cream parlor in the Polish city of Gdańsk. Experts have been working at the site in the historic Śródmieście (city center) district since 2023, and initially uncovered a medieval tombstone decorated with the carved image

By Jackie Wattles, CNN (CNN) — A group of 287 scientists and current and former NASA employees has issued a declaration lambasting budget cuts, grant cancellations and a “culture of organizational silence” that they say could pose a risk to astronauts’ safety. The document — titled “The Voyager Declaration” and dedicated to astronauts who lost

By Andrew Freedman, CNN (CNN) — Once synonymous with leisure and reprieve, summer has increasingly become a season marked by anxiety and disruption. Fossil fuel pollution — alongside other compounding factors — has transformed these months into a time of mounting peril, punctuated by relentless heat waves, rampant wildfires and catastrophic flooding. This summer, in

By Mindy Weisberger, CNN (CNN) — Lesser known than some other beloved tales of larger-than-life heroes such as Gilgamesh, Beowulf and King Arthur, the Song of Wade is a case study in what happens when stories aren’t written down. The epic was once widely known throughout medieval and Renaissance England — so popular that it

By Jack Guy, CNN (CNN) — A Ceratosaurus fossil that is one of only four known to exist has sold for $30.5 million at auction. The rare dinosaur fossil is “one of the finest and most complete examples of its kind ever found,” auction house Sotheby’s said in a statement published Wednesday. The specimen, which