Why are people in one of the world’s richest, safest countries having so few children? Singapore is asking that question. In 2000, its fertility rate matched America’s at 1.6 children per woman. By 2025, it had dropped to 0.87 – almost half the US rate. Singapore’s leaders, worried about population collapse, have reached for the chequebook. Each child, including those born to unmarried parents, will get $55,000 in government support by the time they turn 17. Yet a quarter of Singaporeans say they do not intend to have children. Wealth and security, clearly, don’t guarantee more babies.

UN data shows that global fertility fell from 5.3 births per woman in 1963 to 2.2 in 2023. But this masks a growing divide. In some poor sub-Saharan African countries there are around six births per woman. Compare this with England and Wales, where the figure is just 1.39. More than half of the world – including a billion women in India and China – have a........

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