Weapons of Mass Extinction
S03E06 - Airdate: 2014-08-13
Runtime: 60 min
Asteroids strike, planets collide, black holes blast out death rays, volcanoes erupt, and ice engulfs the planet. These are the universe's weapons of extinction. They've happened before, wiping out entire species, and they will happen again.
Back to How the Universe Works
Episode details and rating from TVmaze.