“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ...

You don't have to be Einstein to know that windmills turn wind into power and can't just use it up. Well, apparently, not ...

For instance, it has been argued that as the modern human Y chromosome replaced the Neanderthal equivalent, Neanderthal males became sterile. Other research suggests that human genes might have messed ...