In news of global warming, a new analysis by top climate scientists finds the Earth’s average temperature is on track to increase by 2 degrees Celsius––or 3.6 degrees Fahrenheit––by mid-century, unless governments take dramatic steps to limit greenhouse gas emissions. The study finds that current pledges to combat climate change under a U.N. agreement crafted in Paris last December fall far short of preventing a temperature rise of 1.5 degrees Celsius, one of the agreement’s goals. The study was led by the U.N.’s former top climate scientist, Robert Watson, who said governments need to double or triple their efforts to meet the Paris target.