Seeing's how I found this story while searching for a picture of a caveman wearing a sling, I am really not in any position to comment on this other contribution from the world of human evolutionary science, so I'll just pass it along:
Breasts Shaped by Evolution for Babies, not MenBreasts Shaped by Evolution for Babies, not Men [breastfeeding.com]
That cute roundness and up-tilt to your breasts evolved to help feed your baby, not attract your mate, say evolutionists.
"The idea came to me from breast feeding my own child when she was an infant," says [Royal Society research fellow at University College in London, Gillian] Bentley.
image: the Uma of Willendorf