Deadliest volcanic eruption: The 1815 eruption of Mount Tambora in Indonesia, which killed up to 100,000 people From lava fountains to towering ash clouds, volcanoes produce some of the most dramatic ...

(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 ...

Live on the East Coast? Thinking of escaping to a warm Caribbean island right now? You might want to check a new, open access database of the world's deadliest volcanoes first. Though not intended as ...

ANCHORAGE, Alaska — A volcano near Alaska’s largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at Mount Spurr in the next few weeks or months has increased.

When the crew aboard the research vessel Sonne set out on a cruise last spring, they were expecting a routine mapping expedition in the South Pacific. But they were in for a big surprise. They ended ...

In a spectacular show of nature’s strength, Mount Etna, Europe’s most active volcano, erupted on June 2, cloaking Sicily in a plume of ash and gas. And while the latest eruption didn’t prompt ...

Here’s a look at volcanoes, mountains that open downward to a reservoir of molten rock. More than 80% of the Earth’s surface, both above and below sea level, is of volcanic origin. Lava is molten rock ...