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How long will it take the human population of 6,000,000,000 to double? 40 years? Then in 2040 there will be 12,000,000,000 people. In 2080 there will be 24,000,000,000 people. How many people can the Earth sustain?
Sustainable development: A real increase in well-being and standard of life for the average person that can be maintained over the long-term
without degrading the environment or compromising the ability of
future generations to meet their own needs.
• Garret Hardin gives some hypothetical future population numbers -- if the world continues the present growth rate:
For comparison todays population:  6,300,000,000.00
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For comparison todays population: 6,300,000,000.00
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CONDITION POPULATION TIME DATE REACHED BACKWARD TIME EQUIVALENT DATE
Standing room only (on land areas only) 8.27 x 1014 615 years 2585 A.D. 1355 A.D.
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827,000,000,000,000.00
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For comparison todays population: 6,300,000,000.00
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CONDITION POPULATION TIME DATE REACHED BACKWARD TIME EQUIVALENT DATE
Standing room only (on land areas only) 8.27 x 1014 615 years 2585 A.D. 1355 A.D.
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827,000,000,000,000.00
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Standing room only (total earth surface) 28.34 x 1014 677 years 2647 A.D. 1293 A.D.
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2,827,000,000,000,000.00
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For comparison todays population: 6,300,000,000.00
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CONDITION POPULATION TIME DATE REACHED BACKWARD TIME EQUIVALENT DATE
Standing room only (on land areas only) 8.27 x 1014 615 years 2585 A.D. 1355 A.D.
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827,000,000,000,000.00
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Standing room only (total earth surface) 28.34 x 1014 677 years 2647 A.D. 1293 A.D.
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2,827,000,000,000,000.00
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All earth covered to human flesh 1.33 x 1023 1557 years 3527 A.D. 413 A.D.
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133,000,000,000,000,000,000,000.00
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