Mass Extinction - What caused the mother of all extinctions 250 million years ago?

1918 Flu - A virus that killed up to 50 million people is brought back to life to decipher its deadliness.

Profile: Cynthia Breazeal - A daring engineer designs robots to communicate and interact the way people do.

Papyrus - Scraps of writings from a garbage dump in ancient Egypt reveal what life was like 2,000 years ago.

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Mass Extinction, 1918 Flu, Papyrus - S3.E8 - NOVA scienceNOW

August 13, 2008

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