moral questions

http://www.youtube.com/watch?v=Hj9oB4zpHww This is Sam Harris at TED. Can science answer moral questions? Does Sam Harris even answer that question in this talk? What do you think?

I know that the fudies question the morals/ethics of agnostics and atheists because they don't have the big ole rulebook from heaven carved in stone. But, except for the "situational ethics" strawman, I can't think of any of their specific questions that they use to "discredit" atheistic ethical...