(CNN) — Here's some background information about volcanoes, mountains that open downward to a reservoir of molten rock. Facts: More than 80% of the Earth's surface, both above and below sea level, is ...

A volcano is an opening in the Earth's crust that allows molten rock, gases, and debris to escape from below the surface. The ...

Add Yahoo as a preferred source to see more of our stories on Google. Volcanoes are Earth’s special effects department, constantly proving that reality can be more dramatic than Hollywood. Lava flows ...

May 6 (Reuters) - A volcano dormant for thousands of years is erupting in the remote South American region of Patagonia, coating nearby towns in ash and forcing emergency evacuations -- the latest in ...

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On Italy's island of Sicily, Mount Etna has spewed lava almost continuously for thousands of years, threatening inhabitants, but also supporting flora and fauna. Italy's Mount Etna lays claim to ...

Kilauea continued to erupt wildly on Hawaii's Big Island this week, shooting lava hundreds of feet into the air and burning homes to the ground. As of Sunday night, 10 fissure vents were open in the ...

Challenge yourself with the ultimate volcano quiz and discover fascinating facts about Earth’s powerful natural phenomena.

Lava is molten rock from a volcano that reaches the Earth’s surface. Liquid rock below the Earth’s surface is referred to as magma. More than 50% of the world’s active volcanoes above sea level ...