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.

Ash from supervolcanoes dwarfing any volcanoes on Earth today could have been so hot that it turned back into lava once it hit the ground miles from an eruption, new research suggests. Supervolcanoes ...

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 ...