World Population: Past, Present, and Future

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World Population: Past, Present, and Future

Postby Jack Flash » 31 Mar 15, 9:30 am

At the dawn of agriculture, about 8000 B.C., the population of the world was approximately 5 million. Over the 8,000-year period up to 1 A.D. it grew to 200 million (some estimate 300 million or even 600, suggesting how imprecise population estimates of early historical periods can be), with a growth rate of under 0.05% per year.

A tremendous change occurred with the industrial revolution: whereas it had taken all of human history until around 1800 for world population to reach one billion, the second billion was achieved in only 130 years (1930), the third billion in less than 30 years (1959), the fourth billion in 15 years (1974), and the fifth billion in only 13 years (1987).
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Re: World Population: Past, Present, and Future

Postby cerina » 04 Apr 15, 2:21 pm

That's pretty scary ... too many people.
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