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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