| http://www.w3.org/ns/prov#value | - Two references are cited: ???From about 1940 to 1970 the increasing industrialization following World War II increased pollution in the Northern Hemisphere, contributing to cooling, and increases in carbon dioxide and other greenhouse gases dominate the observed warming after the mid-1970s.??? ???During the 1950s and 1960s, average global temperatures leveled off, as increases in aerosols from fos
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