Introducing: Unlocking the Fountain
Front Burner
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How Long Have You Lived?
World wide life expectancy is about 71 years, according to united nations data. But there are huge discrepancies around the world, from a life expectancy of 84 in japan to barely 50 in the central african republic. So how did global life expectancy double over jean calman's lifetime? J shansky explains.
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Transcript
