Earth's crust today has a surprisingly similar composition to the planet's first outer shell, or "protocrust," new research ...

The ocean was most likely green, and it might not have been blue forever. Japanese scientists from Nagoya University first ...

A long-lost slab of Earth’s crust may be pulling away the bottom of the oldest part of North America, scientists say ...

A team of researchers at the University of Oxford have uncovered crucial evidence for the origin of water on Earth. Using a ...

Learn about Mars' defunct magnetic field, which may have sustained life on the planet and covered only its southern ...

Water is at the center of one of the enduring questions about how life first formed on Earthr. More specifically, where did ...

Microbes - alive and thriving -- have been found sealed within a fracture of 2-billion-year-old rock beneath Earth's surface.

Green oceans on early Earth, shaped by iron, pushed microbes to evolve light-absorbing tools that worked in green light.

Watch the Earth's tectonic plates grow, shrink, and jostle for position in this new model of the last billion years on the ...

A new study has upended a long-held theory that asteroids brought water to Earth – as it turns out it may have always been here ...

What are some of the largest extraterrestrial impacts to effect Earth? Learn what we’ve seen in history, and what is ...