Etna is Europe’s most active volcano. It has erupted many times, the Catania devastation of 1699 being the worst. Mount Etna towers over eastern Sicily, Italy. It has never lain quiet for long: recently, in late February, it threw up volcanic bombs of more than 3,300 feet, illuminating the top of the mountain with a red flame. Despite being Europe’s most active volcano, Etna’s latest eruptions have caused neither injuries ...