Overview
Naturalist Sir David Attenborough investigates whether the world faces a population crisis and if it is the duty of individuals to change the way they live.
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46 - 1Why Are Thin People Not Fat? January 26, 2009 -
46 - 2Cannabis: The Evil Weed? February 03, 2009 -
46 - 3Why Do We Dream? February 10, 2009
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46 - 4Can We Make a Star on Earth? February 17, 2009
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46 - 5The Secret Life of Your Bodyclock February 24, 2009
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46 - 6What's the Problem with Nudity? March 03, 2009
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46 - 7How to Survive a Disaster March 10, 2009
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46 - 8Who Do You Want Your Child to Be? March 17, 2009
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46 - 9Why Can't We Predict Earthquakes? March 24, 2009
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46 - 10Alan and Marcus Go Forth and Multiply March 31, 2009
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46 - 11How Violent Are You? May 12, 2009
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46 - 18How Many People Can Live on Planet Earth? December 09, 2009