The Collapse of Global Fertility Rates: A Divided Vision for Humanity’s Future While some celebrate falling fertility rates as a success, others warn of the existential dangers posed by population collapse, by Nicolas Hulscher, MPH @ McCulloughFund @ NicHulscher https://open.substack.com/pub/petermcculloughmd/p/the-collapse-of-global-fertility @PeterMcCulloughMD .