Reservoirs of hydrogen gas that form naturally in Earth's crust could help humans decarbonize. The challenge now is finding these accumulations and working out how best to mine them, experts say.

Far below the familiar blue of the surface oceans, geophysicists are piecing together evidence for a vast, hidden reservoir of water locked inside the planet itself. Instead of filling open caverns, ...

Researchers are exploring the idea that one hemisphere of Earth, dominated by the Pacific Ocean, is losing internal heat faster than the continental s ...