我们不会很快灭绝

As news stories and politicians worry about falling birth rates around the world, they are all missing the real reasons for the decline, cognitive and evolutionary anthropologist Paula Sheppard tells Penny Sarchet T HE fall is astonishing. At its height, the global fertility rate hit 5.3 births per woman in 1963, but it has been in near-constant decline ever since. Sixty years on, it is now only around 2.2. In many countries, it is far lower than the roughly 2.1 babies per woman that would sustain current population sizes, known as the replacement rate. …