Plot: Travel back in time to look at three of the largest mass extinctions that have decimated life on the planet. What caused these wipeouts?
![Cast and Crew in Superscience - Season 7 - Episode 1 - Human Extinction Poster of Cast and Crew in Superscience - Season 7 - Episode 1 - Human Extinction](http://mail.actoragecheck.com/lost-image.jpg)
Superscience - Season 7 - Human Extinction (Episode 1)
Episode Aired On:
Saturday, January 15 2005
20 years ago
Saturday, January 15 2005
20 years ago
Go to
Episode 2