(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 ...

In a major discovery scientists has revealed new secrets about Europe's most active volcano Mount Etna.Mount Etna has long ...

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 ...

Italy's Mount Etna lays claim to several titles. It is: The world's most active "stratovolcano" Europe's largest and most active volcano One of the best-monitored volcanoes in the world One of the ...

A powerful swarm of earthquakes in January suggested one of Iceland’s giant “ice volcanoes” may be awakening after a decade of slumber. In the months that followed, more earthquakes have rocked the ...

A volcano is an opening in the Earth's crust that allows molten rock, gases, and debris to escape from below the surface. The molten rock that rises in volcanic vents is known as 'magma', and after it ...

Add Yahoo as a preferred source to see more of our stories on Google. Picture it. After a grueling 45-minute to one-hour hike up Nicaragua’s youngest volcano, Cerro Negro, you get to reward yourself ...

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 ...