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Cosmos: A Space Time Odyssey
Episode 2 - Some of the Things that Molecules Do

The second episode of the Cosmos (2014) documentary miniseries focuses on life and evolution. Neil DeGrasse Tyson gives a brief, but very succinct overview of artificial and natural selection by using examples that are familiar to us -- the breeding of dogs from wolves, the evolution of the eye, and exploring the possibility of life on Saturn's moon, Titan.

Essential concepts: Evolution, natural selection, artificial selection, origin of life, extaterrestrial life.

Answer Key: Available to teachers as part of the biology instructor resources subscription.

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