The world population could reach 12.4 billion people by the end of 2070, which will put enormous strain on the planet's resources, Wion reports, citing a new study, News.bg reports.
Even with the current population of about 8.3 billion people, experts warn that humanity is approaching its ecological limits. They say resources will continue to deplete as populations grow.
“Truly sustainable population is significantly lower and closer to mid-20th century levels“, said Professor Corey Bradshaw, lead author of the study.
He said if people lived within the planet's ecological carrying capacity and at a stable standard of living, the population could increase by about 2.5 billion.
The study analysed more than two centuries of demographic data and used ecological growth models to assess the impact on food security, climate and human well-being.
The researchers warn that the Earth is already sending a “clear biological signal“ that it is under excessive pressure, with humanity using more resources than the planet can replenish.
They say that since the 1960s, the relationship between population growth and economic growth has is weakening, and the increase in people leads to a larger ecological footprint, increased temperatures and more carbon emissions.
Scientists are calling for urgent action, warning that without significant changes, the world could face serious social and environmental crises.