In 1957, when Ghana became the first African country to win its independence, there were 6.05m Ghanaians and some 200m people living in sub-Saharan Africa. Today Ghana’s population has more than quadrupled to 29m and sub-Saharan Africa’s has nearly quintupled to 1bn. This is just the start. Africa is on the verge of an unprecedented population explosion.
1957年，当加纳成为第一个赢得独立的非洲国家时，该国人口605万，总共大约有2亿人生活在撒哈拉以南非洲。如今，加纳人口已经增长逾3倍，至2900万，而生活在撒哈拉以南非洲的总人口增长近4倍，达10亿人。这只是开始。非洲正站在空前人口爆炸式增长的门槛上。
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