(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 ...

Often spotted by onlookers in Hawai‘i Volcanoes National Park, or even by YouTube livestream viewers, the long, ashy gray or ...

Volcano Alert Level: Watch. Kīlauea has erupted episodically since Dec. 23, 2024, within the summit caldera located within ...

For much of 2025, an underwater volcano off the Oregon coast was treated as a geological ticking clock, with forecasts suggesting it could erupt at almost any moment. Instead, the year is ending ...

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 ...

Since 2000, specialists at the National Museum of Natural History have produced the world’s foremost report on active ...

Volcanoes are Earth’s special effects department, constantly proving that reality can be more dramatic than Hollywood. Lava flows like glowing rivers, ash clouds turn skies into apocalyptic paintings, ...

In Volcano area, hear a Kilauea summit eruption update at the Kilauea Military Camp the evening of January 26, and learn all about volcanology and how we monitor volcanoes during an evening ...

A volcano that had been quiet for longer than human civilization suddenly erupted in Ethiopia's Afar region on November 23, ...

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 ...

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 ...