Researchers Say Earth Is Headed for "Jaw-Dropping" Population Decline [View all]

[Celerity]

"It's extraordinary, we'll have to reorganize societies."

https://futurism.com/global-birth-rates-falling-precipitiously?ref=thefuturist

People around the globe are having way fewer babies. By the year 2100, that might turn into a pretty big problem for humanity — rather than the relief one might expect. If they aren’t already, dozens of countries’ populations will be going into decline in this century, according to a new study published in the Lancet this week. 23 countries are expected to feel this effect intensify, with their populations dropping to half of what they are now by the year 2100.

The global population will peak at 9.7 billion around 2064, according to the new projection, and then drop off to 8.8 billion towards the end of the century. “That’s a pretty big thing; most of the world is transitioning into natural population decline,” Christopher Murray, co-author and researcher at the University of Washington, Seattle, told the BBC. “I think it’s incredibly hard to think this through and recognize how big a thing this is; it’s extraordinary, we’ll have to reorganize societies.”

The reality is that with more women receiving an education and entering the work force, combined with the wide availability of contraception, fertility rates are dropping, sometimes precipitously, around the world — a stark reversal of the baby boom following the Second World War. Countries including Spain, Portugal, and Thailand will have their populations more than halve by the end of the century — “jaw-dropping,” according to Murray.

But aren’t fewer humans better for a ravished world that’s rapidly being drained of its resources? The researchers suggest that there may be fewer babies being born, but any positive consequences for the environment would be offset by the challenges of a rapidly aging population. Much older populations “will create enormous social change,” Murray told the BBC. “Who pays tax in a massively aged world? Who pays for healthcare for the elderly? Who looks after the elderly? Will people still be able to retire from work?” “We need a soft landing,” he added.

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Fertility, mortality, migration, and population scenarios for 195 countries and territories from 2017 to 2100: a forecasting analysis for the Global Burden of Disease Study

https://tinyurl.com/ybadb2q7

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Findings

The global TFR in the reference scenario was forecasted to be 1·66 (95% UI 1·33–2·08) in 2100. In the reference scenario, the global population was projected to peak in 2064 at 9·73 billion (8·84–10·9) people and decline to 8·79 billion (6·83–11·8) in 2100. The reference projections for the five largest countries in 2100 were India (1·09 billion [0·72–1·71], Nigeria (791 million [594–1056]), China (732 million [456–1499]), the USA (336 million [248–456]), and Pakistan (248 million [151–427]). Findings also suggest a shifting age structure in many parts of the world, with 2·37 billion (1·91–2·87) individuals older than 65 years and 1·70 billion (1·11–2·81) individuals younger than 20 years, forecasted globally in 2100. By 2050, 151 countries were forecasted to have a TFR lower than the replacement level (TFR <2·1), and 183 were forecasted to have a TFR lower than replacement by 2100.

23 countries in the reference scenario, including Japan, Thailand, and Spain, were forecasted to have population declines greater than 50% from 2017 to 2100; China's population was forecasted to decline by 48·0% (−6·1 to 68·4). China was forecasted to become the largest economy by 2035 but in the reference scenario, the USA was forecasted to once again become the largest economy in 2098. Our alternative scenarios suggest that meeting the Sustainable Development Goals targets for education and contraceptive met need would result in a global population of 6·29 billion (4·82–8·73) in 2100 and a population of 6·88 billion (5·27–9·51) when assuming 99th percentile rates of change in these drivers.

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