The Fiddler crab’s huge left claw explained: ‘females prefer a bigger one’

Science journalist Adam Rutherford discusses the sexual selection of this ‘male ornament’ with The Infinite Monkey Cage’s Brian Cox and Robin Ince plus guest mathematician Marcus Du Sautoy. The outsized claw is a notable exception to the preference of symmetry in the natural world. Accused by the panel of taking everything to its base level Adam Rutherford argues ‘biology is sex and violence’.