Until Mount St. Helens blew in 1980, Lassen's eruption was the most recent volcanic explosion in the lower 48 states. Ecologists now study Lassen's landscape to see what the future may bring to ...

Mount Etna EruptionA scientist overlooks an eruption at Mount Etna, one of the world’s most active volcanoes. The Sicily, Italy, volcano is almost constantly in a state of eruption. Get there ...