Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and upper mantle that fit together like puzzle pieces. Think of these plates as massive rafts floating ...

The past eight months have provided the Island of Hawaii with spectacles of lava fountains at Kilauea’s summit. These historic episodes began on December 23, 2024, consistently offering locals and ...

California has seven active volcanoes, each with a unique eruption history, categorized by type and threat level. The USGS monitors these volcanoes, providing information to authorities and the public ...