How the Universe Works

Weapons of Mass Extinction (3x6)

Ημερομηνία προβολής: Αυγ 13, 2014

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. Are we next?