Mount Merapi, located near Yogyakarta, Indonesia, is one of the country's most volatile volcanoes. It began erupting at dusk on Tuesday, and thousands evacuated the area surrounding it. It didn't come as a shock, as scientists have been expecting an eruption for a while. Here are some of the world's most active volcanoes.
According to the old model of how volcanoes grow, the volcanoes of the Mediterranean shouldn't exist. A new model could explain how they got there.