Life on Earth had to begin somewhere, and scientists think that “somewhere” is LUCA—or the Last Universal Common Ancestor.

A new study published in Science Advances reveals that Earth’s life-friendly conditions may never have existed without a monumental cosmic accident. Researchers from the University of Bern ...

A new analysis of zircon crystals from the Stac Fada Member in northwest Scotland has revealed a billion-year-old meteorite impact event that may have reshaped the trajectory of life on Earth. The ...

Our species likes it cold. Homo sapiens evolved in — and still inhabits — one of Earth’s rare and fragile ice ages, periods distinguished not by an abundance of saber-toothed cats and woolly mammoths ...