How come that humans have long scalp hair? What biological purpose does it serve?
Why does the hair on the scalp grow so long, thick and strong? (Well, for quite some, that is.)
And why is other hair shorter?
Why is the hair on the face (cheeks, nose, forehead), ears and neck so fine and short?
Why is the hair in the armpits and the pubic area of a different quality and length?
How come that some people are "atavistically hairy", have a lot of hair on their back, or on the whole body?
Why does the hair on the scalp grow so long, thick and strong? (Well, for quite some, that is.)
And why is other hair shorter?
Why is the hair on the face (cheeks, nose, forehead), ears and neck so fine and short?
Why is the hair in the armpits and the pubic area of a different quality and length?
How come that some people are "atavistically hairy", have a lot of hair on their back, or on the whole body?