1805 - The World reaches 1 billion human inhabitants.
1927 - 2 billion reached.
1960 - 3 billion
1974 - 4 billion
1987 - 5 billion
1999 - 6 billion
2011 - 7 billion
Learn A thousand new things from one little blog. A mind exposed to a new idea never returns to its original dimensions.Macharper.blogspot.com
1805 - The World reaches 1 billion human inhabitants.
1927 - 2 billion reached.
1960 - 3 billion
1974 - 4 billion
1987 - 5 billion
1999 - 6 billion
2011 - 7 billion
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