Volcanoes have been making headlines lately. Recent eruptions in both St. Vincent and Iceland have displaced hundreds, caused serious damage, and, of course, captivated our attention. Volcanic eruptions can be terrifying, scary, beautiful, and fascinating all at once, and there is so much to know about these mind-blowing natural pheonoma. Head over to Mental Floss to learn some facts you might not know about volcanoes, from volcanoes on other planets to the ways eruptions have changed the world.