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By Ella Nilsen, CNN (CNN) — President Donald Trump’s first month in office has worried federal and state officials alike tasked with overseeing the West’s all-important water supply. The Bureau of Reclamation — the federal agency tasked with managing America’s largest dams, including Hoover and Glen Canyon on the Colorado River — is facing as

CNN By Ashley Strickland, CNN (CNN) — Sky-gazers across the Western Hemisphere will be in for a celestial treat this week when the full moon appears to turn crimson during a total lunar eclipse. The eclipse will be visible in western African and western Europe, the Americas, eastern Australia, New Zealand, northern Japan and eastern

By Katie Hunt, CNN (CNN) — Trees depicted in famous artworks across a range of styles follow the same mathematical rules as their real-life counterparts, scientists have found. The math concept hidden in this tree art — geometric shapes known as fractals — is apparent in branching patterns in nature and may be key to

CNN By Ashley Strickland, CNN (CNN) — Sky-gazers across the Western Hemisphere will be in for a celestial treat this week when the full moon appears to turn crimson during a total lunar eclipse. The eclipse will be visible in western African and western Europe, the Americas, eastern Australia, New Zealand, northern Japan and eastern

By Ashley Strickland, CNN (CNN) — Sky-gazers across the Western Hemisphere will be in for a celestial treat this week when the full moon appears to turn crimson during a total lunar eclipse. The eclipse will be visible in western African and western Europe, the Americas, eastern Australia, New Zealand, northern Japan and eastern Russia

By Jack Guy, CNN (CNN) — Male blue-lined octopuses inject a powerful neurotoxin into the hearts of females before mating to avoid being eaten, according to a new study. The males have evolved to use a venom called tetrodotoxin (TTX) to immobilize females, which are normally around twice their size and commonly eat their sexual

CNN By Katie Hunt, CNN (CNN) — A guitar-shaped shark, a fan-like coral and a venomous deep-sea snail equipped with harpoon-like teeth are among 866 previously unknown species discovered as part of an ambitious effort to document marine life. Found by divers, piloted submersibles and remotely operated vehicles during 10 ocean expeditions, the species have

CNN By Jackie Wattles, CNN (CNN) — A crew of international astronauts slated to launch to the International Space Station on a mission that will take the reins from NASA’s Butch Wilmore and Suni Williams, allowing them to return home after an unexpectedly extended and politically charged journey, will have to wait a bit longer.

By Jackie Wattles, CNN (CNN) — A crew of international astronauts slated to launch to the International Space Station on a mission that will take the reins from NASA’s Butch Wilmore and Suni Williams, allowing them to return home after an unexpectedly extended and politically charged journey, will have to wait a bit longer. The

By Ella Nilsen, CNN (CNN) — The Trump administration announced its intent to roll back major climate policies Wednesday, including rules that target pollution from vehicles and power plants, in a major blow to America’s progress on clean air, clean water and climate action. The changes are expected to inject even more uncertainty into key

By Barbie Latza Nadeau and Lianne Kolirin, CNN (CNN) — The ruins of an ancient Jewish ritual bath have been found near Rome – the oldest such discovery outside of the biblical region of Israel and the surrounding area. The “mikveh,” used by religious Jews for ritual purification, was discovered during the ongoing excavation of

By Katie Hunt, CNN (CNN) — The story of human evolution in Europe has a new character. Fossilized bone fragments unearthed in a cave in northern Spain in 2022 have revealed a previously unknown human population that lived more than 1.1 million years ago, according to new research. Found at the Sima del Elefante site

By Ashley Strickland, CNN (CNN) — It’s a two-for-one cosmic deal. NASA’s newest space telescope, SPHEREx — designed to seek out the key ingredients for life in the Milky Way — and a sun-focused mission called PUNCH are on their way to space. Both missions lifted off together aboard a SpaceX Falcon 9 rocket at

By Katie Hunt, CNN (CNN) — A guitar-shaped shark, a fan-like coral and a venomous deep-sea snail equipped with harpoon-like teeth are among 866 previously unknown species discovered as part of an ambitious effort to document marine life. Found by divers, piloted submersibles and remotely operated vehicles during 10 ocean expeditions, the species have all

By Kate Golembiewski, CNN (CNN) — Paleobiologist Dr. Kenshu Shimada has been fascinated by fossil sharks, including the giant Otodus megalodon, since childhood — he found his first megalodon tooth at 13 years old. So when he saw the 2018 blockbuster “The Meg,” he thought something was fishy. Not only did the movie depict the

By Ashley Strickland, CNN (CNN) — NASA’s two-for-one launch of its newest space telescope, SPHEREx — designed to seek out the key ingredients for life in the Milky Way — alongside a sun-focused mission called PUNCH is facing another delay. Both missions were expected to lift off together aboard a SpaceX Falcon 9 rocket at

By Ashley Strickland, CNN (CNN) — NASA’s newest space telescope, SPHEREx, designed to seek out the key ingredients for life in the Milky Way, and a sun-focused mission called PUNCH, will have to wait a bit longer to lift off to space together, according to the space agency. Both missions were expected to launch aboard

By Julianna Bragg, CNN (CNN) — Scientists say they have the first recorded video evidence of narwhals using tusks not only to strike and manipulate fish during feeding but also engage in what appears to be playful behavior, according to the latest research. The narwhal, often referred to as the “unicorn of the sea” in