Why do we look so different
Humans have evolved a number of physical features that are unique in the primate order. These features have been problematical for the life sciences because some features appear not only to have no adaptive value, but are actually maladaptive.
Hairiness, is one example. Body hair is the default state among land mammals, and all other primate species have retained their body hair (including those living in hot, tropical habitats) for one simple reason: it’s adaptive. So what particular environmental factor (or factors) made it necessary for humans to lose theirs body hair? This and other mysteries of human physiology are finally explained in Them+Us.
why, despite sharing 99% of our DNA with chimps, humans look so different
The human straight backed gait resembles no other primate. Learn why
Why we’ve got an inefficient curved spine, when ever primate evolved a straight spine that is less prone to injury and stress
Why humans have large buttocks relative to other primates
Why human faces are so unique
Why, unlike other primates, we have so little body hair. and why we only have it on our heads and genitals