You might point him to the High Impact Careers Network. There's not much on the website right now but the principles have doing in-depth investigation of the prospects for doing good in various careers and might well be inclined to share draft materials with your friend.
My friend is looking for some advice on what he should do after graduating from Harvey Mudd College. Some relevant bits of information about him are that he
He's currently looking for a grad school where he could tackle interesting problems with possible high benefits in the future. I've made my own suggestions, but I'd like to get a (somewhat) independent set of opinions from the LW community.
So please suggest away!