Schools on four Greek islands will remain closed through next week as earthquakes continue to rattle the region, authorities said.

Long-quiet volcanoes in the Cascades region of the Pacific Northwest are still underpinned by large reservoirs of magma, new ...

The eruption began on December 23 in a crater at the summit of Kilauea, one of the world’s most active volcanoes.

One of the most active volcanoes in the world sits just a few hundred miles off the U.S. West Coast, and some scientists ...