Léo Grasset Léo Grasset is the French punk scientist par excellence, founder of Dirty Biology and author of the blog 'Dans les testicules de Darwin' devoted to biology, testosterone and rock'n'roll (danslestesticulesdedarwin.blogspot.co.uk). He is also on of France's leading up-and-coming evolutionary biologists: see him in action on YouTube giving a paper at the École normale supérieure conference in Lyon in April 2015 on 'Les hommes hybrides - des chimphumains à Denisova'. Read More Read Less