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 ...

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

Add Yahoo as a preferred source to see more of our stories on Google. Volcanoes are Earth’s special effects department, constantly proving that reality can be more dramatic than Hollywood. Lava flows ...

400-mile-long chain of fossilized volcanoes discovered beneath China Researchers recently discovered a huge chain of extinct volcanoes buried deep below South China that formed when two tectonic ...

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 ...

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 ...