On Nov. 24, 1859, Charles Darwin published "On the Origin of Species." It became the most significant scientific work in the last two centuries, challenging and changing how the world views nature, the environment and mankind.
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Jim Secord, the director of the Darwin Coorespondence Project, discusses popular mythology surrounding natural selection.
Credit: Kevin Norris/National Science Foundation and University of Cambridge
Play Audio Mohamed Noor, professor and associate chair of biology at Duke University, discusses Charles Darwin's idea of gemmules and the creation of new species. Noor is a recipient of the 2009 Darwin-Wallace Medal Award.