According tomedia reports, climate change will reshape the world in various ways, and one of the most far-reaching effects of which is the impact of rising temperatures on the human population. A study published by an international research group focused on the future details the grim future facing billions of people around the world, with fast-rising temperatures putting them outside the “climate ecological niche” on which humans have lived for thousands of years.
Professor Marten Scheffer, from the University of Wachningen, said: “This surprisingly constant climate ecological level may represent the basic constraints needed for human survival and development. “
The team calculated that the average global temperature would rise by 7.5 degrees Celsius by 2070, which would be much higher than the global average of just over 3 degrees Celsius, and that land would warm faster than the oceans and population growth would be faster. In addition, combined with the projected global population change, 30 per cent of the world’s population will live in places where the average temperature exceeds 29 degrees Celsius.
At present, the world can not live in places such as the hottest Sahara desert, which accounts for only 0.8% of the earth’s total surface. If humans do not reduce emissions, the group predicts, the number could surge to 19 percent of the world’s land area by 2070.
“This would leave 3.5 billion people in a state that is almost unviable,” said study co-author Jens-Christian Svenning of Aarhus University.
While charting a dire picture of one-third of the world’s population, the researchers hope their findings will also provide some clear direction for decisive action to address the benefits of climate change.
“The good news is that if humans succeed in curbing global warming, these effects will be significantly reduced,” said Tim Lenton, a climate expert at the University of Exeter and co-author of the study. Importantly, we can now express the benefits of controlling greenhouse gas emissions in a more humane way than money. “
The study was published in Proceedings of the National Academy of Sciences.