All life on Earth can be traced back to a Last Universal Common Ancestor, or LUCA—and it likely lived on Earth only 400 ...

The investigation suggests that LUCA lived on Earth 4.2 billion years ago and had an immune system that could fight off ...

Trapped gases in 1.4 billion-year-old salt crystals reveal ancient secrets about oxygen and carbon dioxide levels on early ...

An artist's impression of the collision between the early Earth and Theia, which may have formed the moon MPS / Mark A. Garlick Around 4.5 billion years ago, a planet called Theia is thought to have ...

"This is maybe the first direct evidence that we've preserved the proto-Earth materials." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

For decades, geologists labeled a billion-year stretch of Earth’s history—from 1.8 to 0.8 billion years ago—as the “Boring Billion.” They assumed not much occurred during the time: mountain building ...

Around 4.5 billion years ago, a planet called Theia is thought to have smashed into newborn Earth. The messy collision kicked up debris, which probably formed our nighttime companion, the moon. While ...