BBC News
By Matt McGrath
Environment correspondent
August 9, 2021
Human activity is changing the climate in unprecedented and sometimes irreversible ways, a major UN scientific report has said.
The landmark study warns of increasingly extreme heatwaves, droughts and flooding, and a key temperature limit being broken in just over a decade.
The report “is a code red for humanity”, says the UN chief.
But scientists say a catastrophe can be avoided if the world acts fast.
There is hope that deep cuts in emissions of greenhouse gases could stabilise rising temperatures.