Arctic Surprise By Professor Fritz Vahrenholt A few days ago, an international research group from the USA, Canada and Switzerland led by Lorenzo Polvani of Columbia University (New York) published a sensational study in Nature climate change, which attributes a large part of the warming of the 20th century to CFCs (“Substantial twentieth-century Arctic warming…

über “Arctic Surprise…Sensational Study In Nature”: Large Part Of 20th Century Warming Attributed To CFCs! — NoTricksZone