(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 ...

Tonga eruption that poured 150 metric megatons of water vapor into the stratosphere affected the atmosphere for years A new study builds on previous research into the underwater volcano's effects on ...

NEW ORLEANS — One year ago, scientists made a surprisingly concrete prediction: Before 2025 was out, they said, Axial volcano — a submerged seamount near Oregon in the Northern Pacific Ocean — would ...

Blue sunsets, whirling dust devils, giant volcanoes, tiny moons, and marsquakes—there’s a lot to discover on Mars!

The Kanlaon volcano in the Philippines erupted today (Dec. 9) at 3:03 p.m. local time, spouting an eruption column of up to 1.86 miles (3 kilometers) into the sky and triggering the evacuation of ...

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 ...