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 ...

An eruption at Mount Etna in July 2021. (Salvatore Allegra Photography/Moment/Getty Images) Mount Etna is more than half a million years old, but this massive stratovolcano in Sicily still has plenty ...

Volcanoes are often framed as nature’s most violent spectacles, yet some of the largest on Earth ooze lava quietly for years without a single dramatic blast. Scientists have now pulled together a ...

Underneath the vineyards and thermal spas in southern Italy, magma churns to create one of the world’s most active volcanic systems in a region known as Campi Flegrei. Outside of Naples, Campi Flegrei ...

Tides flowing in a subsurface ocean of molten rock, or magma, could explain why Jupiter’s moon Io appears to have its volcanoes in the “wrong” place. New NASA research implies that oceans beneath the ...