Mountains cover more than a quarter of the Earth’s land surface. They carry deep spiritual significance, regulate weather and ...

Some 4.6 billion years ago, Earth was nothing like the gentle blue planet we know today. Frequent and violent celestial impacts churned its surface and interior into a seething ocean of magma—an ...

When the early Earth’s magma ocean crystallized 4.4 billion years ago, the deep mantle trapped an ocean’s worth of water, ...

Archaeologists in Britain say they've found the earliest evidence of humans making fires anywhere in the world. The discovery ...