Human health and the future.

• Position: Illustration

Number of people now living within the reach of malaria-transmitting mosquitoes (potential transmission zone), worldwide 2.5 billion Number of people who will live in the transmission zone by the latter half of the 21st century, after projected expansion of the transmission zone by global warming 4.8 billion Average number of heat-related deaths in Atlanta each summer 78 Average number projected by 2050, assuming no change in the city's population size or age profile, but with projected global warming 293 Predicted decline in production of cereal grains (rice, corn, wheat, etc.) as a result of climate change (climate effects only) by 2060, in the developed countries -23.9 percent in the developing countries -16.3 percent Additional decline in grain production from physiological effects of C[O.sub.2], in developed countries -3.6 percent in the developing countries -10.9 percent Number of people at risk of hunger in 2060, without global warming 640 million Number...