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 ...

Cataclysmic volcanic eruptions are rare — but inevitable. Governments should not only work to stem global warming, but also prepare for other extreme events with a planet-wide impact. The 1815 massive ...