The world population 12 millennia ago was around 4 million – half of the current population of London.
— Max Roser (@MaxCRoser) May 10, 2019
[source https://t.co/yQpR44vPhW] pic.twitter.com/k9hqchNwO2
via Twitter https://twitter.com/MaxCRoser
May 10, 2019 at 03:53PM
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