An interesting analysis of the original cause of the Darfur war/conflict/genocide. An excerpt:

More recent computer modelling has suggested that rain patterns over Africa are influenced rather by ocean temperatures, and those in turn reflect global warming, and the rise of greenhouse gases in the atmosphere. In other words, droughts in Africa may be caused less by its hapless inhabitants and more by oversize cars and cheap flights in Europe and the US.

See, Arnie; all the more reason to get rid of your Humvees.