First broadcast: on BBC One South EastLatest broadcast: on BBC Two Scotland
The series of science documentaries in which three famous people question why they are the way they are sees John Barrowman challenging scientists to explain why he is gay. Show more
First broadcast: on BBC One WalesLatest broadcast: on BBC Two Wales
Series in which famous people ask why they are the way they are. Athlete Colin Jackson lets scientists loose on his body and mind to discover the secrets of his amazing talents. Show more
First broadcast: on BBC One Northern IrelandLatest broadcast: on BBC One Northern Ireland
The series of science documentaries in which three famous people question why they are the way they are concludes with violinist Vanessa-Mae. Show more