New research reveals how rock strength plays a crucial role in erosion, shaping landscapes over millions of years.

Under California's Sierra Nevada mountains, a slow yet powerful force will change the entirety of the Earth's crust there.

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

A 770,000-year-old mystery is not something you stumble across every day, and it's making these researchers reconsider some things.