Supervolcanoes
Show: Cosmic Journeys --> Season: 1 - Season 1
AirDate: 5/23/2014
Runtime: 24
Voting: 0 (0)

Overview: They are eruptions so vast, so Earth-shattering, they have changed the history of our planet. Climate collapse. Toxic turmoil. Mass extinction. Worse than a killer asteroid, or nuclear war, they are Earth's most destructive Supervolcanoes.