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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

By Jack Guy and Kameryn Griesser, CNN (CNN) — A meteorite that is the largest known piece of Mars on Earth has sold for $5.3 million, with taxes and fees, to an anonymous bidder at a Sotheby’s New York auction Wednesday. Known as NWA 16788, the meteorite weighs 54 pounds (24.5 kilograms), massive compared with

By Jacopo Prisco, CNN (CNN) — A collision observed between two black holes, each more massive than a hundred suns, is the largest merger of its kind ever recorded, according to new research. A team of astronomers discovered the event, dubbed GW231123, when the Laser Interferometer Gravitational-Wave Observatory (LIGO) — a pair of identical instruments

By Katie Hunt, CNN (CNN) — Scientists have recovered ancient proteins from a fossilized rhinoceros tooth, breaking new ground in the study of ancient life on Earth. The 24 million-year-old tooth, which was unearthed in the Canadian Arctic, contains proteins that are 10 times older than the most ancient known DNA. Using the sample, scientists

By Laura Paddison, CNN (CNN) — The strongest nor’easters — destructive and often deadly storms that slap the US East Coast with paralyzing rain, snow and flooding — are being supercharged by the effects of climate pollution, a new study found. Nor’easters, which typically form between September and April, are fueled by the temperature contrast

By Jacopo Prisco, CNN (CNN) — Researchers suspect that two meteorites found in the Sahara Desert in 2023 may originally have come from Mercury, which would make them the first identified fragments of the solar system’s innermost planet. The least studied and most mysterious of the solar system’s rocky planets, Mercury is so close to

By Issy Ronald, CNN (CNN) — When researcher Jared Towers set up his cameras underwater to observe a pair of killer whales, he saw something strange. One of the orcas, a juvenile female, “approached a camera I had in the water to film her younger brother and then opened her mouth and let out a