Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and upper mantle that fit together like puzzle pieces. Think of these plates as massive rafts floating ...

How did young volcanoes on Mars form? This is what a recent study published in the journal Geology hopes to address as a team of scientists investigated the complex geological processes responsible ...

Covers how volcanoes are formed, and treats them in historical and mythological perspective, with attention to Mt. St. Helens, Mt. Rainier, and volcanoes in Hawaii. Has a segment on the Modoc people ...