Magma from the mantle finds its way to the surface, where it erupts as lava or ash and gas—sometimes in spectacular spurts, ...

Giant, large-scale eruptions can have more serious impacts. One such event contributed to the demise of the dinosaurs 66 ...

A multinational team of scientists aboard the Exploration Vessel Nautilus will set sail Monday for a 22-day mission to explore the volcanically active seafloor in the Marianas, where they aim ...