Catch the soft glow of earthshine as a young crescent moon appears low after sunset. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...

Researchers revisited the 1970s discovery of ancient stone tools at Monte Verde—an iconic site in Chile that transformed our understanding of how and when humans arrived in the Americas.

The history of Earth is written on the great tablets of tectonic plates. The motions of plates shaped land masses, formed ...