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James Hutton proposed that Earth was millions of years old. He believed it was reshaped slowly over time through immense geological forces.
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Malthus published an essay on factors affecting population growth.
He believed the human population was growing faster than could be sustained by necessary resources. -
Lamarck hypothesized how traits were inherited from generation to generation. He believed they were developed through the course of a lifetime, and passed on through genes.
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The same day as Abraham Lincoln!
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In 1831 , at the age of 22, Darwin embarked on his journey aboard the H.M.S. Beagle.
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Lyell explained underlying geological processes, including Uniformitarianism, volcanic activity, earthquakes, and glacial drift.
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Remains of a giant sloth unearthed in South America
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Wallace, writes a letter to Darwin about his studies of the geographical distribution of species. He opens the discussion on evolution by natural selection.
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Darwin publishes his argument for evolution by natural selection, based upon his findings and research.
