Picky Eaters/Capturing Carbon/Sea Lions and Walruses/Sangeeta Bhatia

21st July 2009 Season 4 Episode 4

Discover why picky eaters may have a genetic excuse, learn about a new strategy for capturing carbon dioxide from the atmosphere, see just how intelligent marine mammals can be, and meet a biomedical engineer who has figured out a way to make tiny livers in her lab.

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Season 4 · Episode 5

Moon Smasher/Secrets in the Salt/Bird Brains/Lonnie Thompson

Follow a NASA satellite looking for water on the moon, see what ancient salt deposits reveal about life 250 million years ago, learn how bird brains are remarkably similar to our own, and meet a climatologist who digs for clues to climate change in the world's highest glaciers.

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