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A collage of newspaper articles reporting predictions of global cooling in January 1970 (‘Colder Winters Held Dawn of New Ice Age’ and ‘Scientists See Ice Age In the Future’, Washington Post) and May 1975 (‘Scientists Ponder Why World’s Climate Is Changing; a Major Cooling Widely Considered to Be Inevitable’, New York Times). The collage was made by an American conservative think tank and also includes a story from May 1932 about melting ice caps (‘Next Great Deluge Forecast by Science’, New York Times).

 3.1 Industrial sulfates