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NUMBER ONE HERO

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Steven Johnson Tours the Ghost Map
Steven Johnson

Steven Johnson recounts how the cholera outbreak in old London and the UK has been resolved.

1 people like this

PLAY

Steven Johnson: Steven Johnson Tours the Ghost Map

November 1, 2006 (over 17 years ago)

Steven Johnson recounts how the cholera outbreak in old London and the UK has been resolved.

1 people like this

Source: TED

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