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 ...

NASA has selected two Earth science missions for development, one focused on studying the atmosphere and the other on terrestrial ecosystems and ice.

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 ...

“We usually think of water as so benign, but when it’s divided in the form of little droplets, water is highly reactive,” said Richard Zare, describing a line of laboratory work that moves electricity ...