There are regular volcanoes, and then there are the supervolcanoes. Massive calderas of hot magma of incomprehensible size. Bad news, these things explode randomly and catastrophically. Worse news, there are a bunch around the Earth. Visit the Astronomy Cast Page to subscribe to the audio podcast! We usually record Astronomy Cast as a live Google+ … Continue reading Astronomy Cast Ep. 440: Destroy and Rebuild, Pt. 4: Supervolcanoes!