North America is dripping—with sizable blobs of rock sinking from the underside of the continent, beneath the U.S. Midwest, ...

Even the oldest and most stable of lithospheric structures can’t withstand geologic machinations deep within the Earth.

A fascinating new study reveals that a massive chunk of Earth’s crust, buried deep beneath the Midwest, is slowly pulling ...

Chattanooga has become the first National Park City in North America, the city announced Thursday. The city takes its place ...