China introduced its so-called one-child policy more than three decades ago as a control mechanism when rapid population growth was outstripping growth in the country’s food supply.
But the city of Yicheng has challenged this claim. Chinese authorities selected Yicheng 30 years ago for a secret experiment: to act as a control group to see what would happen if families had the freedom to have more than one child. And the population there has actually grown at a slower rate than the national average.
http://english.aljazeera.net/news/asia-pacific/2010/06/2010620486587362.html
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