University of Reading study says that placenta acts like parasite as reported here by the bbc. I think, amazingly, women might have already figured this out.
And in another university study, this time by Queens university Ontario, scientists are shocked to discover that women do NOT swing their hips to attract men, because they only do that when they're least fertile. Because women only have sex to get pregnant. Or are we supposed to imagine that the best way for women to get a good mate/ fellow parent to their offspring is to attract some random guy in their most fertile period, not build up a relationship with them. This is shoddy, culturally imperialist blinkered science. grrrrr