Darkness, not cold or acidification, was the main driver of marine extinctions after the asteroid that killed the dinosaurs.

The asteroid impact that wiped out the dinosaurs didn’t keep life down for long. New research shows that microscopic plankton began evolving into new species within just a few thousand years—and ...

Around 66 million years ago, a gigantic asteroid smashed into Earth and wreaked chaos globally. It's not too surprising that size would be linked to survival, Lacovara said. On land, "it's pretty ...