As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure ...

An experiment to quantify the amount of the universe’s lightest element in Earth’s core suggests that the planet’s water has mostly been here since the beginning ...

For millions of years, the Earth has oscillated between ice ages and warmer episodes. The movements of the ground beneath our ...

Ancient enzymes show life’s nitrogen signal stayed unchanged for billions of years, helping scientists read early Earth.

Earth’s distant future has always been framed as a slow fade billions of years from now, but a new generation of models is painting a sharper and more unsettling picture. Instead of a gentle decline, ...