Hidden deep beneath the Pacific Ocean, researchers have uncovered ... What they found was unexpected—zones resembling ancient tectonic plates in areas where no subduction processes occur.

Beneath our feet, hundreds of kilometers deep, lies an invisible yet essential world: the Earth's mantle. For a long time, scientists believed they understood its structure and functioning. But ...

The map highlights in yellow the zones of the Pacific Plate that are being pulled apart by the sinking tectonic plate along the Pacific Ring of Fire.

Experts say portions of the continent are pulling apart, creating the possibility that the Horn of Africa will become an island.

Discover interesting facts about how big earthquakes can get, why earthquakes happen, and why they're so hard to predict.

Movement along the San Andreas Fault was to blame. The North American and Pacific tectonic plates had moved past each other by more than 15 feet — compared to an annual average of two inches.

Movement along the San Andreas Fault was to blame. The North American and Pacific tectonic plates had moved past each other by more than 15 feet — compared to an annual average of two inches.