By Matt McGrath
Restricting population growth will not solve global issues of sustainability in the short term, new research says.
A worldwide one-child policy would mean the number of people in 2100 remained around current levels, according to a study published in the Proceedings of the National Academy of Sciences.
Even a catastrophic event that killed billions of people would have little effect on the overall impact, it said.
There may be 12 billion humans on Earth by 2100, latest projections suggest.
Concerns about the impact of people on the planet’s resources have been growing, especially if the population continues to increase.
‘Can’t stop it’
The authors of this new study said roughly 14% of all the people who ever existed were alive today.
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