Subduction zones, where one tectonic plate dives underneath another, drive the world’s most devastating earthquakes and ...

Harvard University researchers say they’ve found evidence that the outer layers of the Earth more than 3 billion years ago cracked into shifting tectonic plates, as they are today, adding to a ...

A previously unknown layer of partially molten rock has been detected beneath Earth’s crust. The discovery could help scientists learn more about the motions of Earth’s tectonic plates.