Michael Johnson: Survival of the Fastest

The four-time Olympic gold medallist embarks on a personal journey in a bid to understand whether a possible link between the transatlantic slave trade and genetic selection may be a factor in the continuing success of African-American and Caribbean athletes at top-flight events. He also explores the appalling crimes carried out on slave ships and plantation owners' barbaric breeding programmes.

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S2012E28 - Ruby Wax's Mad Confessions