A long-lost slab of Earth’s crust may be pulling away the bottom of the oldest part of North America, scientists say ...

Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust above it to "drip" and suck down rocks from across the continent.

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