Sam Harris and Morality

I recently put up a link to an article by Sam Harris in the Huffington Post on whether science can intrude on an area normally considered to be outside its remit, namely morality. In this video clip, Sam Harris discusses his ideas in greater depth. In short, he puts forward a non-reductive moral naturalist or 'Cornell realist' view according to which values supervene on non-moral facts about what is conducive to the promotion of human well-being.