Video Link: https://www.youtube.com/watch?v=ujUo_yCx8_g

Cosmos: One Voice in the Cosmic Fugue- Episode 2
Air Date: October 5, 1980. Sagan discusses the story of the Heike crab and artificial selection of crabs resembling samurai warriors, as an opening into a larger discussion of evolution through natural selection (and the pitfalls of intelligent design). Among the topics are the development of life on the Cosmic Calendar and the Cambrian explosion; the function of DNA in growth; genetic replication, repairs, and mutation; the common biochemistry of terrestrial organisms; the creation of the molecules of life in the Miller-Urey experiment; and speculation on alien life (such as life in Jupiter #39;s clouds). In the Cosmos Update ten years later, Sagan remarks on RNA also controlling chemical reactions and reproducing itself and the different roles of comets (potentially carrying organic molecules or causing the Cretaceous--Paleogene extinction event). Playlist for whole episode: Cosmos: A Personal Voyage- http://www.youtube.com Episode 1- The Shores of the Cosmic Ocean http://www.youtube.com Episode 2- One Voice in the Cosmic Fugue http://www.youtube.com Episode 3- The Harmony of the Worlds http://www.youtube.com Episode 4- Heaven and Hell http://www.youtube.com Episode 5- Blues for a Red Planet http://www.youtube.com Episode 6- Travellers #39; Tales http://www.youtube.com Episode 7- The Backbone of Night http://www.youtube.com Episode 8- Journeys in Space and Time http://www.youtube.com Episode 9- The Lives of the Stars http://www.youtube.com Episode 10- The Edge of Forever http://www.youtube.com Episode 11- The Persistence of Memory http://www.youtube.com ...From:sasijayaramViews:5 0ratingsTime:01:00:12More inEducation

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Cosmos: One Voice in the Cosmic Fugue- Episode 2 - Video