20 October 2011

Seven billion and counting
Nature - UK
"It's a relatively simple accounting framework: only birth, death and migration can change a population," says Thomas Buettner, assistant director of the Population Division of the United Nations Department of Economic and Social Affairs in New York City, where the calculation was carried out on a standard desktop PC. "But there are a lot of conflicting data as well."…(19 October 2011)

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