Info Panel

First Hypothesis

1824 French mathematician and physicist Jean Baptiste Joseph Fourier first hypothesizes that the atmosphere plays a significant role in mediating temperature on Earth Fourier, in the article “General Remarks on …

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Eunice Foote Portrait

Warming Predicted

1856 American scientist Eunice Foote predicts the warming impact of “carbonic acid” (carbon dioxide) on the atmosphere. Foote describes an experiment where she filled separate glass jars with water vapor, …

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John Tyndall

Warming Demonstrated

1861 Irish physicist John Tyndall demonstrates experimentally that water vapor and other gases warm the atmosphere John Tyndall, in the article “On the Absorption and Radiation of Heat by Gases …

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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 …

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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 …

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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 …

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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 …

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Plass published

Plass Published

1956 The New York Times publishes a summary of the Gilbert Plass paper headlined “Warmer climate on the earth may be due to more carbon dioxide in the air” The …

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Oceanographers’ Proof

1957 American oceanographers Roger Revelle and Hans Suess demonstrate that CO2 levels in the air have increased as a result of the use of fossil fuels Roger Revelle and Hans Suess …

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First Mention

1965 Roger Revelle contributes to the first mention of global warming in a government report, drawing an analogy between human-produced gases entering the global atmosphere and the effect of glass …

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First Computer Model

1967 Syukuro Manabe and Richard T. Wetherald are the first to use a computer model to explore the impact of increasing atmospheric carbon dioxide on the Earth’s climate Syukuro Manabe …

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Limits to Growth

1972 The Club of Rome publishes Limits to Growth, a report that predicts that if current growth trends continue unchanged, the limits to growth on the planet will be reached …

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Keeling Curve

1976 Charles D. Keeling creates the “Keeling Curve,” a simple visualization of the longest continuous record of CO2 concentration in the world. A paper published by Charles D. Keeling of the Scripps …

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Warming Trend Noted

1977 The U.S. National Academy of Sciences releases a report that identifies a global warming trend caused by increased use of fossil fuels, and predicts that global temperatures could rise …

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Exxon Warned

Senior Exxon Corporation scientist James F. Black advises Exxon’s Management Committee that CO2 from the world’s use of fossil fuels would warm the planet and could eventually endanger humanity At …

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Charney Report

A report of the Ad Hoc Study Group on carbon dioxide and climate for the National Research Council chaired by Massachusetts Institute of Technology meteorologist Jule Charney estimates “the most …

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Second NAS Report

Three years after its first climate report, a second National Academy of Sciences report on anthropogenic warming, chaired by economist Thomas Schelling, stresses uncertainty about the extent and timing of …

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