Some analysts predict that in addition to the direct environmental impacts, social strains caused by increased resource scarcity may lead to greater conflict, with the poor again being the most likely victims. The crisis in the Darfur region of Sudan is believed by some analysts to have been triggered by environmental stress.26 Global warming also portends adverse health impacts, again particularly for the poor. For example, mosquito-carried malaria is expected to migrate to higher altitudes, newly threatening Nairobi, Harare, and other cities