I think the article by Saletan linked by Joe below is actually quite good. Although basically a pro-choice guy, he sees no problem with women being presented with all the information available before making the grave choice concerning abortion. Darwinian conservative Larry Arnhart adds that evolution intends that we use both reason and emotion to decide what to do with embryos and fetuses. It’s impossible for us, Larry contends, to connect emotionally with an embryo that looks nothing like us, and it’s natural that the more the fetus resembles us the more we want to protect him or her. Larry agrees with his fellow sociobiologist James Q. Wilson that it’s proper that we endow a fetus with more and more humanity or moral worth over the course of a pregnancy. But is humanity really ours to endow, and are our emotions really reliable? Joe also gives us the link to the speech by Nick Eberstadt about the global effect of sonograms: It seems that many parents throughout the world can’t identity with images of females fetuses, and the result has been lots of abortions that have disturbed significantly the natural ratio between boys and girls. Killing that privileges testosterone is dangerous in all sorts of ways.