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James Hutton
James Hutton proposed that Earth was millions of years old. He believed it was reshaped slowly over time through immense geological forces. -
Thomas Malthus
Malthus published an essay on factors affecting population growth.
He believed the human population was growing faster than could be sustained by necessary resources. -
Jean-Baptiste Lamarck
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. -
Darwin's birth
The same day as Abraham Lincoln! -
Darwin set sail!
In 1831 , at the age of 22, Darwin embarked on his journey aboard the H.M.S. Beagle. -
Charles Lyell
Lyell explained underlying geological processes, including Uniformitarianism, volcanic activity, earthquakes, and glacial drift. -
Giant Sloth Fossils
Remains of a giant sloth unearthed in South America -
Alfred Wallace
Wallace, writes a letter to Darwin about his studies of the geographical distribution of species. He opens the discussion on evolution by natural selection. -
On the Origin of Species
Darwin publishes his argument for evolution by natural selection, based upon his findings and research.
