Challenging Moral Dilemmas

I suggest you read The New Science of Morality by Joshua D. Greene for the weekend:

[...] a lot of our problems, moral dilemmas, are the result of modern technology. For example, we have the ability to bomb people on the other side of the world. Or we have the ability to help people on the other side of the world. We have the ability to safely terminate the life of a fetus. We have the ability to do a lot of things that our ancestors were never able to do, and that our cultures may not have had a lot of trial-and-error experience with. How many cultures have had trial-and-error experience with saving the world from global warming?  None. Because we're on trial number one, and we're not even through it yet.