The dominant rock type in the Yellowstone region is rhyolite, and that is very rich in silica. As hot water circulates underground, it can dissolve that silica and bring it to the surface, where it is ...

Lava in Hawaii, seismic shaking in Alaska and underwater rumblings near Oregon. Scientists say it’s not the end of the world, but it’s definitely worth watching.

More geological changes are occurring at Yellowstone National Park, as another hole forms in one of the park's basins.

All About Sarah Jessica Parker’s Son James and Twins Tabitha and Marion (Who Didn’t Know She Was Famous) Ford recalls nearly 700,000 cars for fire risk. See impacted models. Markets could freak out if ...

Cutting‑edge dating reveals driftwood high in Grand Canyon caves 55,250 years ago when a meteor’s shock wave blocked and ...