The looming population bust

While many people still view runaway population growth as today’s most urgent global challenge, falling fertility rates are the real demographic time bomb. Nearly two-thirds of people now live in countries where fertility is below the replacement rate of 2.1 children per woman. The UN expects the world’s population to peak in the 2080s, with some scholars arguing that the turning point may arrive even sooner. The consequences of this shift are already visible.

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