This episode was first broadcast in 2011:

Mic Cavazzini chats with Professor Simon Gaechter from the University of Nottingham

about why we humans just can't co-operate with one another- before putting our

panelists through Gaechter's Public Goods Game to see just how selfish we all are.

Dr Julie-Anne Popple brings you the latest on morphing moths.

Presented by Victoria Bond

Produced by James Bourne

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