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Telescope
Restrepo
Frozen Planet: Autumn
Once Upon a Time
The Hunt The Hardest Challenge
Awake The life of Yogananda
Dawn Of Humanity
Easy Listening
That Sugar Film
Flight of the Butterflies
Romans
One Life on the Limit
The Making of an Emperor
Annapurna to Everest
Congo
Harmony of the Worlds
Let there be Life
Beyond Thinking
The Lost Tribes of Humanity
The Vikings Uncovered
The Language of Science
CTRL
The End of the Universe
Courtship
Archimedes Secret
In The Sign Of The Cross
Ghosts of the Abyss
Age of Empire
Is your Brain Male or Female
Dinosaurs Alive
The Gatekeepers
1945 The Savage Peace
The Southwest Islands
Cooked: Air
Hitler and the Occult
Kingdom of the Blue Whale

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One Voice in the Cosmic Fugue
One Voice in the Cosmic Fugue 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'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).

Category:Science  Duration:01:00:00   Series: Cosmos

 
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