Life on Earth has always depended on nitrogen. As a building block of proteins and DNA, nitrogen is essential to all living ...

"Until now, it was assumed that life on the early Earth, before the atmosphere was enriched with oxygen, was limited by a ...

Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.

Scientists thought this crater in Australia was the world’s oldest – but an independent analysis shows they might be off by ...