scepticism about science

Here is a chilling article by a philosopher I have mentioned in the past. (Was it to this class?) Peter Singer,who holds the chair in bioethics in Princeton,is probably the most controversial philosopher in the world. He has defended euthanasia and abortion but is best known for his campaign on behalf of animal rights. There were near riots when he was awarded the chair in Princeton.People were holding placards calling him a Nazi. One of my conservative colleagues called him the "enemy of humanity,the champion of the chicken"
This article is about Mbecki,former President of SouthAfrica, who took the usual post colonialist critique of the "hegemony of western rationalism" to tragic extremes. Is this a logical consequence of the anti scientific discourse that is so common nowadays? Is President(soon to be expresident) Bush's policy limitng stem cell research a milder version of the same outlook as Mbecki's