Fusulines thrived in cold seas but vanished twice when warming from volcanoes rapidly spiked ocean carbon levels.

These are the rarest animals on Earth creatures so elusive, so endangered, that most people don’t even know they exist. From the ghostly white Amur Leopard with fewer than 100 left in the wild, to the ...

Enigmacursor darted around North America in the Late Jurassic 145-150 million years ago and its skeleton now be on display in ...

Evolution has a habit of doing its weirdest work in places most of us never see—pitch-black caves, remote sinkholes, deep-sea ...