The number of children being born is falling in many countries, including South Korea JUNG YEON-JE/AFP via Getty Images
The global population will peak at 8.6 billion in 2050 and decline to 7 billion by 2100 if current trends continue. That is the projection of a model developed as part of an initiative from the non-profit organisation, and it is 2 to 3 billion less in 2100 than other recent forecasts.
This model, created to explore which policies would deliver the most good for the majority of people, also suggests that if the world invested…
