Hybrid Cars, Drosophila Maggots, the Tribal Mind.

In this episode, physicist and energy consultant Joseph Romm talks about the next generation of hybrid cars and his Scientific American article on that subject; biologist Matthew Cobb discusses a recently concluded science conference devoted to fruit fly maggots as models for genetics research; and journalist David Berreby talks about his book Us and Them: Understanding Your Tribal Mind. Plus, test your knowledge about some recent science in the news.

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