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MP3 Guardian science correspondent Ian Sample meets the celebrated cosmologist Max Tegmark to discuss his latest book, Our Mathematical Universe. In an extended interview, Max talks about our scientific understanding of the structure of the …

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Food: The Hidden Driver of Global Politics (NPR)

Submitted by on May 19, 2011 – 5:43 pm

MP3… Food prices are rising, but the impact is not being felt equally around the world, says environmentalist Lester Brown. Brown, the founder and president of the Earth Policy Institute, argues that food has quickly become the hidden driver of world politics in a piece published in the May/June issue of Foreign Policy. [NPR] (25m 28s)

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