Census - 1950 to 2050 (InfoPlease.com) Provides historical and projected population of the world, as well as growth rates for each ten year period. 2-01 Freshwater Getting Scarce (WWF International - Steele) Describes the worldwide problem of gaining access to safe water. "Nearly half of the global population is living without safe water or adequate sanitation, millions of homes are under the threat of recurring floods, and drought and desertification are undermining advances made in food production. The loss of up to 50 per cent of freshwater species over the past 30 years signals that one of the underlying causes of the freshwater crisis is the continuing degradation of land and water ecosystems." 3-02 Future - Top Ten Forecasts (World Future Society) Provides the forecasts of the editors of The Futurist, such as "Two-thirds of the world's population will be chronically short of water by 2050." World Population (Census.gov) Provides a population clock. 02-06 World Population - Ancient to 1950 (U.S. Census Bureau) Provides estimates of world population from 10,000 B.C. to 1950 A.D. Estimates place the population of 12,000 year ago at between one and ten million people. At 8,500 years ago the maximum number of people was still estimated to be ten million. For 6500 years or more the population of the earth may have been stable. By 1500 A.D. the estimated population of the earth was 500 million. By 1800, 300 years later, the population had doubled to about a billion people. By 1930, 130 years later, it doubled again to 2 billion people. By 1975, 45 years later, world population doubled again to 4 billion. It is estimated to take until 2025, 50 years later, to attain another doubling of world population to 8 billion. Editor's Note: Current world water, food, and fossil fuel supplies cannot sustain the last projected doubling of population. 2-04 World Population Births and Deaths (U.S. Census Bureau) Provides the estimated number of births, deaths, and increase in population per year, month, day, hour, minute, and second. 2-04 World Population Change (U.S. Census Bureau) Provides a chart showing estimated change in total world population from 1950 to 2050. Shows a high of over 85 million more people per year around 1990 to less than 40 million more people per year by 2050. 2-04 World Population Growth Rate (U.S. Census Bureau) Provides a chart showing estimated growth rate of world population from 1950 to 2050. Shows a high of over 2 percent in the 1960's to less than one-half percent by 2050. 2-04 World Population Projection 1950 - 2050 (U.S. Census Bureau) Provides a chart showing estimated total world population from 1950 to 2050. 2-04 World Population for the Past Year (U.S. Census Bureau) Provides the number of persons estimated to be in the world, month by month, over the past year. 2-04 World Population Provides information and exercises regarding the growing world population. 6-99 World Population Provides information and exercises regarding the growing world population. 6-99 World Water Shortage Has Started (Boston Globe - Rothfeder) Provides facts about the current and growing shortage of drinkable water. "But the reality we face is sobering: water -- nature's most essential element -- is becoming dangerously scarce. A freshwater crisis has already begun that threatens to leave much of the world dry in the next 20 years, without enough water for a minimum quality of life." "Nearly 2.2 billion people in more than 62 countries, one-third of the world's population, are starved for water." 1-02

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