Poor Thomas Malthus. The 18th-century theorist, who believed that population increases would inevitably be checked, must have turned in his grave when the seven billionth person was born on October 31 this year. (The timing was disputed, but that was mere detail.) The event meant that the world’s population had doubled in just four decades. If present trends continue, it will hit 9bn by 2045/50.
可怜的马尔萨斯(Thomas Malthus)。这位18世纪的理论家坚信人口增长将不可避免地受阻，如果他知道世界人口在今年10月31日增至70亿（具体时间仍有争议，但那只是鸡毛蒜皮的细节），他在九泉之下也不会安宁了。这一事件意味着，世界人口在短短40年里增加了一倍。按照目前趋势，世界人口到2045至2050年将增至90亿。
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