Season 2 Episodes8
Cast1

Erik Dellums
Himself - Narrator
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Ranked #7 of 8 in Season 2•−0.2 vs season avg
Are we alone in the Universe? What makes Earth so different? Part of the answer is our volcanoes. without them we would not be here either. Today we are discovering volcanoes on alien worlds. Are these worlds where, tomorrow, we might find life?

Erik Dellums
Himself - Narrator
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"Volcanoes - The Furnaces of Life" is episode 1 of How the Universe Works season 2. It scored 7.9/10 from 134 votes, ranking #7 of 8 episodes this season (season average 8.1). It aired on July 11, 2012.