Hunt for Alien Earths / Art Authentication / Maydianne Andrade / Autism Genes

7th July 2009 Season 4 Episode 2

Join astronomers hunting for Earth-like planets, see how computers distinguish authentic art from forgeries, meet a spider biologist who studies sexual cannibalism, and learn about genes that may be involved in causing autism.

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Season 4 · Episode 3

Marathon Mouse/Dinosaur Plague/Franklin Chang-Díaz/Space Storms

Watch how an "exercise pill" turns couch-potato mice into athletes, explore a controversial new theory of what killed the dinosaurs, meet the first Latino-American astronaut, and find out why the beautiful northern lights signal a threat to our electronic society.

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