Nuclear war: Bad for humans, good for global warming. Nuclear winter = cooling, war = less consumers for SUVs. It's practically a win-win!
Saudi Arabia and America: Turns out America exported it's own version of Jim Crow to Saudi Arabia when they first set up shop in the 1940s. But remember everyone, nothing America ever does in the past is relevant to the present.
700 Million middle-class Chinese consumers by 2020. Vaguely terrifying and exhilarating all at once. If we survive to 2030, I think we might actually make it after all on this crazy chunk of iron and silicon we call home.