Doctor Knowles and Professor McCork get to the bottom of life's questions. Here, they find out why girls can't grow beards and what would happen if a man never shaved. Show more
Discover 11,128,835 listings and 279,775 playable programmes from the BBC
Doctor Knowles and Professor McCork get to the bottom of life's questions. Here, they find out why girls can't grow beards and what would happen if a man never shaved. Show more