It took 200,000 years for our human population to reach 1 billionâand only 200 years to reach 7 billion. But growth has begun slowing, as women have fewer babies on average. When will our global population peak? And how can we minimize our impact on Earthâs resources, even as we approach 11 billion?
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UN World Population Prospects
Real-time population counter
NASA Socioeconomic Data and Applications Center
Center for Biodiversity and Conservation
David Hillis, Derrick Zwickl, and Robin Gutell, University of Texas
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