Amy Howerska joins Simon Watt to judge suggestions for the next humans from Timandra Harkness, James Logan, the studio audience and Mother Nature herself in an episode recorded live at the Royal Institution. The panel discuss olfactory resheathing, heteropaternal superfecundation and the incredible L. riparia - a generously endowed earwig.
Theme music written and performed by Laurence Owen. Graphics by Theo Weedon, web design by Ian Bridgeman and support from the Wellcome Trust. The producer is Rachel Wheeley.