The principle of uniformitarianism says that the present is the key to the past. This principle has had a profound impact on the science of geology.
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Earth Science, Geology
Along with Charles Lyell, James Hutton developed the concept of uniformitarianism. He believed Earth's landscapes like mountains and oceans formed over long period of time through gradual processes.
Photograph by SSPL/Getty Images; mezzotint by J.R. Smith; original by R. Cosway
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May 20, 2022
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