Men have deep voices, women less so. This is a pretty basic fact that most small children will be able to tell you, but what we don’t often think about is that this is a very clear sexual dimorphism (and therefore likely evidence for sexual selection)! This vocal dimorphism is not just further evidence for [...]
The fact that there is a sexual height dimorphism in humans–men are taller, on average, and women are shorter–is widely accepted. This is probably the least controversial dimorphism that exists and thus possibly, then, good and broadly acceptable evidence for (at least past) sexual selection pressures in human evolution. For these reasons, we read a [...]