Out of an estimated 1,500 active volcanoes around the world, 50 or so erupt every year, spewing steam, ash, toxic gases, and lava. In 2012, active volcanoes included Guatemala's Volcan de Fuego, New Zealand's Tongariro, Russia's Plosky Tolbachik, Chile's Puyehue, Italy's Etna, and a new island appearing in the Red Sea. In Hawaii, Kilauea continues to send lava flowing toward the sea, and locals living near Mexico's Popocatepetl continued to deal with ashfalls. Collected below are scenes from the wide variety of volcanic activity on Earth over the past year.