US & World

By Ashley Strickland, CNN In the past year, a tiny helicopter flew on Mars, a NASA spacecraft slammed into an asteroid and the James Webb Space…

By Laura Paddison, Krystina Shveda and Jhasua Razo, CNN Even as the world smashes through one all-time heat record after another and speeds towards…

By Amarachi Orie, CNN A scan of the skull of a 319-million-year-old fossilized fish has led to the discovery of the oldest example of a…

By Katie Hunt, CNN Some 125,000 years ago, enormous elephants that weighed as much as eight cars each roamed in what’s now northern Europe.…

By Ashley Strickland, CNN When the Vikings crossed the North Sea to reach Britain in the ninth century AD, they brought their dogs and horses with…

By Ashley Strickland, CNN An unusual star system created more of a fizz and less of a bang when it exploded in a supernova. The lackluster explosion,…

By Ashley Strickland, CNN A recently discovered green comet will soon zip by Earth for the first time in 50,000 years. It was last visible in the…

By Katie Hunt, CNN No other animal is as inexorably linked with extinction as the dodo, an odd-looking flightless bird that lived on the island of…

By Ashley Strickland, CNN As a NASA orbiter turned its camera to the Martian surface, the face of a bear seemed to be looking back. A camera aboard…

By Kristin Fisher, CNN Sometime this spring, NASA will make one of the biggest announcements in its history when it names the initial four-person…

By Ashley Strickland, CNN The Arctic was once a surprisingly warm place — and a haven for unusual creatures. About 56 million years ago, Earth…

By Zoe Sottile, CNN A globe-trotting gecko has accidentally made the trip from Egypt to England after hitching a ride in a container of strawberries.…

By Yoonjung Seo and Heather Chen, CNN Five Russian men who fled the country after Moscow’s military mobilization order last September have been…