Plate Tectonics

Plumes of hot rock can help track tectonic plates.

A new scientific expedition to the world's eighth continent, Zealandia, could reveal secrets about the submerged continents formation.

The Hillary Step, a rocky outcrop just beneath the summit of Everest, has finally succumbed to gravity and partially collapsed.

One of the still-unsolved mysteries about Earth's history is how the planet became breathable. Now, scientists say the culprit may have been the giant rock slabs that make up Earth's outer shell.

How hot are Earth's scorching insides? A sweltering 2,570 degrees Fahrenheit (1,410 degrees Celsius), a new study finds.

Earth had a hard outer shell before its tectonic plates.

The island nation of New Zealand may be the tiny chunk of a massive continent that lurks mostly under the Pacific Ocean, new research suggests.

The remnants of a 3-billion-year-old continent are lurking under the African island of Mauritius, new research confirms.

Ethiopia’s most active volcano has seen a surge of recent activity.