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

A groundbreaking study suggests that the famous Cambrian explosion—the dramatic burst of diverse animal life—might have ...

Researchers determined that footprints in White Sands National Park in New Mexico are from the oldest migrants to North ...

A European company that seeks to develop orbital spacecraft for cargo, and eventually humans, took a step forward this week ...

Ancient footprints challenge the timeline of human arrival in North America, suggesting people were here much earlier than ...