Haiti
My knowledge of Haiti is mostly limited to the revolution, but I, like many other people who should know more about a place so closely connected to the history and politics of my own, have been stunned by the images of destruction from the earthquake. By now you probably know of where and how to donate to relief efforts.
I liked how Ann Fernald ended a thoughtful and personal post about Haiti (which I'm editing just to make a bit more direct):
Maybe ... while we pray for the victims, the survivors and all who help them, we should also try to think our way to a more just world, one in which Haiti would not always and forever suffer.