This 4-part IDEAS tribute to Charles Darwin celebrates the 150th anniversary of his earth-shattering book, On the Origin of Species. Darwin's theory of Evolution by Natural Selection completely changed the way we think about the natural world.

Title from disc. Originally broadcast on: Ideas, CBC radio, 2009.

pt. 1. The prepared mind -- pt. 2. From the beagle to the book -- pt. 3. Primates vs primates -- pt. 4. Darwin's enduring legacy.