NEW YORK CITY — Global warming is close to spiraling out of control, according to the sixth report by the U.N.’s Intergovernmental Panel on Climate Change, which UN Secretary-General Antonio Guterres has called “a code red for humanity.” <br /> <br /> <br />The report outlined five different scenarios for the planet based on how much carbon emissions are reduced, ranging from a future with incredibly large and quick pollution cuts to a future involving continued increases in carbon pollution. <br /> <br /> <br />In five previous reports, the world was on track for the hottest scenario, likely to involve temperatures 3.3 to 5.7 degrees Celsius higher than pre-industrial levels by the end of the century. <br /> <br /> <br /> <br />
