I’m in Italy visiting a very famous volcano called Mount Vesuvius. A volcano is an opening in the Earth’s crust, which allows hot magma, ash and gases to escape from below the surface.

Kilauea volcano in Hawaii is erupting with fountains of lava. Check out a USGS livestream from within the Halema'uma'u crater.

HAWAII VOLCANOES NATIONAL PARK, Hawaii (AP) — Lava began bubbling Monday through the crust of one of the world's most active volcanoes — Kilauea, on Hawaii's Big Island.

HAWAII VOLCANOES NATIONAL PARK, Hawaii (AP) — Lava is bubbling through the crust of one of the world’s most active volcanoes, which is Kilauea, on Hawaii’s Big Island.

Experts believe a Mount Rainier eruption would post a grave threat to millions who live in the southern and eastern sections ...