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Going grey

作者:梁苠    发布时间:2019-03-06 08:02:12    

The end is in sight for the world’s population explosion. A report in this week’s Nature(vol 412, p 543) welcomes new predictions that the number of people on Earth will decline after peaking in around 2070. However, it warns that nations will struggle with social and economic challenges because the ratio of elderly to young people will rise dramatically. In Japan, for instance,

 

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