Mark Maslin

Mark Maslin

Mark Maslin is a Professor of Palaeoclimatology at University College London.

Why Did Humans Evolve Big Penises But Small Testicles?

Why Did Humans Evolve Big Penises But Small Testicles?

Humans have a much longer and wider penis than the other great apes. Even the largest of gorillas, more than twice as heavy as a human, will have a penis just two and half inches long when erect. However our testicles are rather small. A chimpanzee’s testes weigh more

Mark Maslin
Mark Maslin
Hypothesis