Experts worry that China's falling birth rates and aging population could be a demographic time bomb. "Given this unexpected low birth rate … the aging scenario for China will be more severe. That could have a series of long-term implications from government spending on pensions, health care, to the ratio between taxpayers and retirees," Wang Feng, sociology professor at the University of California, Irvine, and Shanghai's Fudan University, told Marketplace last year.
 
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