Catalyst - Palaeo Revolution

Catalyst's resident Palaeontologist, Dr Paul Willis, has been a fossil lover for as long as he can remember. So when he had the chance to look inside an ancient embryo that started life over half a billion years ago, he couldn't get on the plane fast enough.
Paul's trip took him to the UK and then Switzerland, where they're using an enormous piece of technology to study some of the tiniest relics known to man