One fateful day 66 million years ago, the dinosaurs — which had inhabited Earth for about 165 million years — got a nasty surprise: A roughly 9-mile-wide (15 kilometers) asteroid crashed into what is ...

Carbon dating of teeth fragments found in Brazil reveals that some species persisted for thousands of years longer than ...

The ripples suggest that the lake was free of ice at one point.

A remarkable fossil discovery in Australia has reshaped scientists’ understanding of the Cretaceous predator hierarchy, ...

Scientists reveal a never-before-seen species of leopard-size apex predator that lived in lush forest 30 million years ago.

As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

Picture a primordial Earth: a world of muted browns, grays and greens. Fast forward to today, and Earth teems with a ...

P rojections of our future under climate change paint a picture of extreme weather and acidified oceans, a world many of ...