Matters of Scale - Human Health and the Future

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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
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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
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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
- 26.9 percent
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Additional decline in grain production from physiological effects of CO2,
in developed countries
- 3.6 percent
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Number of people at risk of hunger in 2060, without global warming
640 million
Number at risk with projected warming
680 to 940 million
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Life expectancy in the most developed countries in 2000
79
Life expectancy in the least developed countries in 2000
42
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Share of worldwide AIDS/HIV cases that are in developing countries
90 percent
Share of AIDS stories with non-U.S. settings in the U.S. media
4 percent
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Sources: Climate change effects: Intergovernmental Panel on Climate Change, Second Assessment Report, 1995. Grain production decline is from a global climate change model of the United Kingdom Meteorological Office. Life expectancy: World Health Organization, World Health Report 1995. AIDS cases: UNAIDS, The HIV/AIDS Situation in Mid 1996, July 1, 1996. AIDS in the U.S. media: Covering the Epidemic: AIDS in the News Media, 1985-1996, Henry J. Kaiser Foundation Survey, June 16, 1996.