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Plass’ Theory

1956 Canadian physicist Gilbert Plass publishes a lucid explanation of “carbon dioxide theory” to account for “the general warming of the climate that has taken place in the last sixty …

Jul 1956 Read More →

The Sea Around Us

1951 American marine biologist and writer Rachel Carson publishes the New York Times bestseller The Sea Around Us, including observations about pronounced warming in the Arctic regions of the Earth …

Jan 1951 Read More →

Emissions Estimation

1938 English engineer and amateur meteorologist Guy Callendar concludes that humans have added about 150,000 million tonnes of CO2 to the air over the previous 50 years “The artificial production …

Jan 1938 Read More →

Temperature Prediction

1904 Swedish scientist Svante Arrhenius concludes that the Earth’s temperature might increase by 5 to 6 degrees Celsius with a doubling of atmospheric CO2 Nobel Laureate Svante Arrhenius follows early …

Jan 1904 Read More →