- Aug 2016
Like most mammals human males are bigger than human females. We also tend to be the ones that engage in fighting. Obviously, this is largely because women are the ones who can get pregnant. However, it puzzles me that we're one of the few mammals where the males have testicles on the outside. Why? What purpose does it serve? Women have way more and bigger reproductive organs than we do. Why is that essential part of our baby-making system left vulnerable, protruding away from the rest of the body?