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The population has more than doubled again since the middle of the 20th century and the population experts are expecting another roughly 3 billion people to be added to the planet’s population by midcentury.  That’s somewhere in the neighborhood of 9 billion people.

 

 

 

 

 

 

http://www.sustainablescale.org/

images/uploaded/Population/

World Population Growth to 2050.JPG