If the fertility replacement rate of our species falls below 2.1, our population will decline. One of science's dirty little secrets is that we are flirting with falling below that line now.
The notion that our species is suffering from overpopulation is a myth. If you took every single man woman and child alive on Earth today and put them all in Texas, how much space would everybody have to themselves? An acre. That's right, every man woman and child alive today would have an acre all to themselves if we were all crammed into the state of Texas.
In Africa, the decline in fertility rates is mainly due to diseases such as AIDS. In China, overpopulation fears have caused the government to institute measures to keep their fertility rates down. In most of western Europe and North America, abortion and birth control have been driving fertility rates down since the 1960s and 70s.
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SUB-REPLACEMENT FERTILITY
2006-09-02
02:55:30
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Biology