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Published on Jul 28, 2011
The world has never seen anything like the population explosion of the past century. The United Nations projects that the global population will top 9 billion by 2050 and 10 billion by 2100. But these projections are uncertain, as they depend on assumptions about the future, such as how many children a woman will have 20 or 30 years hence. This video, part of Science's 29 July 2011 special issue on Population, highlights demographic trends around the globe, which offer a window into what our future world may look like.
Science (www.sciencemag.org) is the world's leading journal of original scientific research, global news, and commentary. For more original videos, check out the Science Video Portal (video.sciencemag.org).