some experts think we’re on track to hit 550 ppm by the end of the century, which would cause average global temperatures to rise by 6 degrees celsius
some experts think we’re on track to hit 550 ppm by the end of the century, which would cause average global temperatures to rise by 6 degrees celsius
nuclear holocaust:4
in one model, the average temperature of earth following a full thermonuclear war falls for several years by 7 to 8 degrees celsius (13 to 15 degrees fahrenheit) on average.