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Podcast: More or Less
Episode: WS MoreOrLess: Population explosion?
Description: "We just shut our eyes to the fact that the world's population is increasing out of control." Is broadcaster and naturalist Sir David Attenborough right about global population projections? And Tim Harford wonders whether it's true that Scotland is home to 20% of the world's redheads. This programme was first broadcast on the BBC World Service.