RDF TV - Saddles and Domes: Evolution of the Giant Tortoises
By RICHARD DAWKINS, THE RICHARD DAWKINS FOUNDATION
Updated: Wed, 05 May 2010 17:25:15 UTC - An RDFRS Original
Download: iPhone | 720p HD
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.
"In May 2007 Josh and I were among those who went to Galapagos with a large group from the Center for Inquiry. As we walked with the guided parties over the islands, Josh took every opportunity to film the wildlife. Occasionally he would turn the camera on me, and I would ad lib a few words about whatever animals we were looking at. These 'vignettes' were unscripted and unrehearsed, and there was no time for any "Take 2" repetitions, because the guided walk was moving on."
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