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1856: The first scientific paper stating that more CO2 would lead to a warmer earth (Eunice Newton Foote) was published.

1938: Paper, "The Artificial Production of Carbon Dioxide and Its influence on Climate" was delivered at Royal Meteorological Society. He had evidence the planet was warming.

1938: From 1908 to 1938, industry added 9,000 tons of CO2 per minute to the atmosphere. (That figure is now 77,000 tons per minute, or 110 million tons/day)

1953: increase in the frequency of tornados noticed. Continued to increase for 60 years

1955: Atlantic hurricane frequency up 50% over 2 decades

1957: Dr. Roger Revelle told a Congressional subcommittee that the Greenhouse effect might turn Texas and Southern CA into real deserts.