Romulus and Remus are doing what puppies do: chasing, tussling, nipping, nuzzling. But there’s something very un-puppylike about the snowy white 6-month olds—their size, for starters. At their young ...

Colossal Biosciences, an American biotechnology company, announced the "de-extinction" of the dire wolf, a prehistoric wolf species that died out more than 10,000 years ago, in April 2025. Three pups ...

EDITOR’S NOTE: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Colossal Biosciences claims it has revived an extinct species, but scientists outside the company are skeptical. Somewhere in the northern US, drones fly over a 2,000-acre preserve, protected by a ...

In a secret location in the United States, two white wolves are lounging in the grass in a sunny, roughly one-acre enclosure. It’s early spring and a chill wind blows through bare trees nearby. The ...