Asked by Bob
Between 1940 and 1970 most scientists were already concerned about global warming.
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True or false
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False.
While a number of scientists (e.g., Callendar in the 1930s, Revelle and Suess in 1957, Keeling from 1958) were raising concerns about rising CO2 and possible warming, there was no broad scientific consensus between 1940 and 1970. Many researchers debated effects (including aerosol cooling), and the clear majority agreement that CO2-driven warming was a major future threat did not solidify until the 1970s and especially after reports like the 1979 Charney assessment.
While a number of scientists (e.g., Callendar in the 1930s, Revelle and Suess in 1957, Keeling from 1958) were raising concerns about rising CO2 and possible warming, there was no broad scientific consensus between 1940 and 1970. Many researchers debated effects (including aerosol cooling), and the clear majority agreement that CO2-driven warming was a major future threat did not solidify until the 1970s and especially after reports like the 1979 Charney assessment.
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