Education.

[skywalker]

Running out of green to wear? Check out other places in the world where people are killed by their governments/slaughtered by militants/exploded by terrorists/have no free speech/starve to death/are impoverished while a couple of rich people profit from their backbreaking labor/generally have awful lives!

Really, I've seen a lot of people say that they wished they knew more about situations in the rest of the world. If you're serious about that, Foreign Policy's Failed States Index is an excellent crash course in human tragedy.