97% of countries will fall below replacement level fertility rates by the end of the century, according to a new study. Shrinking fertility rates pose economic challenges of workforces shrinking and aging populations. download the app Email address Sign up By clicking “Sign Up”, you accept our Terms of Service and Privacy Policy . AdvertisementBy 2100, over 97% of countries will have fertility rates below the replacement level, a Lancet study forecasts. With the fertility rates expected to fall below the necessary replacement level to sustain population size over time, experts warn we are approaching a "demographically divided world."

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Persons: Elon Musk, — Organizations: Service, Institute for Health Metrics, University of Washington's School of Medicine, Business