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 ...

Some scientists think we can better understand volcanoes by learning how the gaseous vortexes emerge. By Carolyn Wilke Some volcanoes perform a rather subtle trick: blowing rings of vapor that waft ...

An ongoing eruption from the volcano has created a small land mass less than a mile off Iwo Jima island. It’s a great case study of how volcanoes work. By Hisako Ueno and Mike Ives Reporting from ...