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-The U.N. panel on climate change sounded a dire warning on Monday, saying the world is dangerously close to runaway warming – and that humans are "unequivocally" to blame.
Already, greenhouse gas levels in the atmosphere are high enough to guarantee climate disruption for decades if not centuries, scientists warn in a report from the Intergovernmental Panel on Climate Change (IPCC). https://www.ipcc.ch/report/ar6/wg1
That’s on top of the deadly heat waves, gargantuan hurricanes and other weather extremes that are happening now, and are likely to become more severe.
Describing the report as a "code red for humanity", U.N. Secretary-General António Guterres urged an end to the use of coal and other highly polluting fossil fuels.
“The alarm bells are deafening,” Guterres said in a statement. “This report must sound a death knell for coal and fossil fuels, before they destroy our planet.”
The IPCC report comes just three months before a major U.N. climate conference known as COP26 in Glasgow, Scotland, where nations will be under pressure to pledge much more ambitious climate action, and substantial financing to go with it.
Drawing on more than 14,000 scientific studies, the report gives the most comprehensive and detailed picture yet of how climate change is altering the natural world -- and what could still be ahead.
Unless immediate, rapid and large-scale action is taken to reduce emissions, the report says, the average global temperature is likely to cross the 1.5-degree Celsius (2.7 degrees Fahrenheit) warming threshold within the next 20 years.
So far, nations’ pledges to cut emissions https://reut.rs/3ywxDyE have been inadequate for bringing down the level of greenhouse gases accumulated in the atmosphere.
Governments and campaigners reacted to the findings with alarm.
British Prime Minister Boris Johnson, whose country will host the climate conference, said the next decade would be "pivotal" to securing the future of our planet:
"I hope today’s IPCC report will be a wake-up call for the world to take action now, before we meet in Glasgow in November for the critical COP26 summit."
Emissions “unequivocally caused by human activities” have already pushed the average global temperature up 1.1C from its pre-industrial average -- and would have raised it 0.5C further without the tempering effect of pollution in the atmosphere, the report says.
That means that, even as societies move away from fossil fuels, temperatures will be pushed up again by the loss of those airborne pollutants.
Scientists warn that a rise of more than 1.5C above the preindustrial average could trigger runaway climate change with catastrophic impacts, such as heat so intense that people die just from being outdoors.