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What caused the greatest mass extinction nearly 250 million years ago?1918 Flu: The 1918 flu virus is revived and decoded in the hopes that we can learn from it before the next pandemic.Profile: Cynthia Breazeal: A look at MIT social roboticist Cynthia Breazeal.Papyrus: Can we use space-age technology to read papyri fragments that are almost 2,000 years old?
First Air Date : Jan 25, 2005
Last Air date : Nov 14, 2012
Episode : 40 Episode
Season : 6 Season
Runtime: 55:60 minutes
Studio: PBS
Country: United States of America
