Supervolcanoes are defined by their ability to produce supereruptions — explosions of more than 240 cubic miles of volcanic material. But scientists disagree on how useful the term is.
EXCLUSIVE: While millions of people live at the feet of volcanoes, their activity needs to be closely monitored to prepare local communities and the whole world for potentially devastating eruptions.
New fossils from South America hint at life during the "Great Dying" extinction event of the Permian, and some fascinating new research on Yellowstone supervolcano.