Neil Delamere sifts through evolutionary upgrades suggested by rocket scientist David McKeown and soon to be double doctor, Lara Dungan. Simon Watt is in the chair. The panel discuss whether shark skin would be useful to humans, whether it's worth evolving immortality, and find out why David wants to put giant electromagnets in our chests.
Our theme music was 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.