Summary:
- This article discusses a recent study that suggests the United Nations may have significantly underestimated the future growth of the human population.
- The study found that the UN's projections for global population growth by the end of the century could be off by as much as 2 billion people, with the population reaching 10.9 billion instead of the previously estimated 8.9 billion.
- The researchers attribute this potential underestimation to factors like declining fertility rates in some regions not declining as quickly as expected, as well as the impact of climate change and other environmental factors on population growth.