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 ...

One Planet, 1,500 Personalities: The Uniqueness of Volcanoes Every volcano is unique, with its own special quirks (and yes, these can change over time). But of the roughly 1,500 active land volcanoes ...

These fiery features can be as dangerous as they are mesmerizing. Here are a few things to keep in mind if you live near or ...

Earth has four main layers. Earth’s innermost layer is a solid core made from iron. It’s outer core is a molten mixture of iron and nickel. These layers are surrounded by Earth’s mantle, the mushy ...

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 ...