Richard Dawkins explains how and why the Giant Tortoises of Galapagos evolved on each of the different islands. He shows how the different shell shapes evolved to help the tortoises adapt to environments on the different islands.
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“In May 2007, I went to Galapagos with a large group from the
Center for Inquiry. As a small group of us walked with the guided
parties over the island, occasionally I would take the opportunity to
film the wildlife and speak about their significance. The result are
these ‘vignettes’, which were unscripted”
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