Secrets of Bones

Sex (1x6)

Exibido em:: Mar 25, 2014

Ben Garrod seeks out the big part that bones can play in reproduction. Through sexual selection, the skeleton has adapted to aid courtship, competition and even copulation. On his travels, Ben meets baseball players, drops a 10kg weight on a sheep's skull and finds out that by not having a penis bone humans are very much in the minority.