Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The age of de ...

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 ...

Extinction is a part of nature. Of the five billion species that have existed on Earth, 99.9 per cent have vanished. The Late Devonian extinction, nearly four hundred million years ago, annihilated ...

Just because a species is presumed extinct doesn’t mean it’s gone forever. Here are four glowing examples of this unique, and felicitous, phenomenon. Not all species that have been classified as ...

Colossal Biosciences, the genetic engineering company working to bring back the woolly mammoth, has actually already brought back one of its extinct Ice Age cohabitants: the dire wolf. The Dallas, ...