Helium-3 dating reveals new plankton species emerged within thousands—and sometimes just 2,000—years after the dinosaur-killing impact, showing life recovered far faster than assumed.

See how trees rose, endured and survived across 500 million years; evolving superpowers and weaponry; and shaping how we grip ...

This little critter hadn’t previously been identified south of Montana, but tiny, fossilized teeth show it had traveled into Colorado by around half a million years after the dinosaurs were wiped out.

The discovery indicates that around 6 million years ago, South America was struck by a large space rock. This was probably ...