These gravity flows, massive underwater movements of mud, sand, and water are capable of traveling across broad, unconfined ...

Crews uncover Ice Age megafauna fossils during a Texas Loop 88 highway project, offering a rare glimpse into the state’s ...

A new study from the U.S. Geological Survey finds that groundwater in Appalachia, the Gulf Coast, and California is ...

Of the eight active volcanoes on the USGC watch list, three are relatively easy to explore — Long Valley, Mt. Lassen, and ...