In the Season One finale of How It Began, historian Brad Harris reveals the beautiful history of how life came to know its true origins through humanity's theory of evolution. Witness the courage and the brilliance of investigators, from modest coal miners to scientists like Darwin, as they challenged traditional beliefs in their quest to discover where all of the plants and animals came from.

By Brad Harris, Historian of Science & Technology. For more information on this episode, including a select bibliography, visit howitbegan.com.