There is a high likelihood that human civilisation as we know it will come to an end by 2050.
That’s according to a policy paper, Existential Climate-related security risk, which predicts more than half of world’s population will face lethal heat conditions beyond the threshold of human survivability.
It says desertification could be severe in southern Africa, the southern Mediterranean, west Asia, the Middle East, inland Australia and across the south-western United States.
The report said a number of ecosystems, including coral reef, the Amazon rainforest and the Arctic, will collapse by 2050.
‘Even for 2C of warming, more than a billion people may need to be relocated and in high-end scenarios, the scale of destruction is beyond our capacity to model, with a high likelihood of human civilisation coming to an end,’ it said.