According to a rough scientific study, the total number of people to have inhabited Earth between 8,000 B.C. and the year 2002 is somewhere near 106,456,367,669. If you count the extra 702.8 million people born since 2002, the total becomes roughly 107,159,216,169. That’s 107.1 billion people!

Also interesting is the average number of births per 1,000 people. In 1 A.D. there were 80 births per 1,000 people. By the year 1650, this dropped to 60 per 1,000. In 1900, it dropped again to only 40 per 1,000. In 2002, it was almost cut in half again to only 23 births per 1,000 people. Even though the world population is at its highest ever (6.5 billion), the base growth rate has been dropping dramatically. Hmmm…

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