Scientists found new evidence that Earth’s crust is peeling underneath the Sierra Nevada in California. The process might be how the continents formed, they say.

As the last Ice Age came to an end nearly 10,000 years ago, something unexpected happened deep beneath Earth’s surface. Large ...

As you read this, the North American continent’s underside is dribbling away into Earth’s molten mantle. And according to ...

Earth’s uppermost layer, the lithosphere, is made up of the rigid crust and the top part of the mantle, which is in a denser, but more fluid state. This layer also contains Earth’s oceanic ...