Produced and presented by Tilly Boleyn.

Science News by Ian Woolf.

Human evolution by Marc West.

Retrocausality by Tim Baynes.

Sperm wars by Darren Osborne.

Science in 2007 predictions.

Tantalising tidbits from Lachlan Whatmore, Catherine Beehag and the lovely Jacqui Hayes, who also provided technical assistance.