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==History==
==History==
===Origin===
===Origin===
In 1827, French scientist Joseph Fourier suggested that although the atmosphere allowed sunlight to pass though to warm the Earth, it blocked "dark heat" (infrared radiation) from the Earth and thus prevented energy from being transferred back into space.<ref name=Fourier>Fourier, Jean Baptist Joseph, "On the Temperatures of the Terrestrial Sphere in Interplanetary Space", Translated in ''The Warming Papers: The Scientific Foundation for Climate Change Forecast''. The relevant section is pp. 12-13.</ref> Fourier did make an unfortunate analogy between the Earth's atmosphere and a space enclosed by glass. All the same, it may not be fair to blame Fourier for the greenhouse effect meme. He also discusses convection as an alternative explanation and, as a good scientist, recommends an experiment to resolve the issue.
In 1827, French scientist Joseph Fourier suggested that although the atmosphere allowed sunlight to pass through to warm the Earth, it blocked "dark heat" (infrared radiation) from the Earth and thus prevented energy from being transferred back into space.<ref name=Fourier>Fourier, Jean Baptist Joseph, "On the Temperatures of the Terrestrial Sphere in Interplanetary Space", Translated in ''The Warming Papers: The Scientific Foundation for Climate Change Forecast''. The relevant section is pp. 12-13.</ref> Fourier did make an unfortunate analogy between the Earth's atmosphere and a space enclosed by glass. All the same, it may not be fair to blame Fourier for the greenhouse effect meme. He also discusses convection as an alternative explanation and, as a good scientist, recommends an experiment to resolve the issue.
In 1861, Irish scientist John Tyndall measured the absorption of radiant energy by various gases in the atmosphere. He concluded that water vapor was the gas primarily responsible. It could therefore be considered the warming agent that Fourier hypothesized. Tyndall suggested that changes in humidity could bring about climate change.
In 1861, Irish scientist John Tyndall measured the absorption of radiant energy by various gases in the atmosphere. He concluded that water vapor was the gas primarily responsible. It could therefore be considered the warming agent that Fourier hypothesized. Tyndall suggested that changes in humidity could bring about climate change.