Recent fossil finds could mean that "Lucy" wasn't our direct ancestor, some scientists say. Others strongly disagree.

Four billion years ago, Earth was violent, hot, and unstable. Yet new research suggests that by then, life had already ...

The discovery marks a significant moment for a theory that was once dismissed as fringe science but is now gaining serious scientific traction. Panspermia is far from a modern invention. The concept ...

Scientists uncover evidence that all life on Earth traces back to a single ancestor, dating back 4.2 billion years, far ...