Where Did We Come From? (NOVA scienceNOW)

This film explores the origin of our solar system and the start of life itself, how head lice figure in human evolution, and more. Neil deGrasse Tyson takes us on a journey back in time to the birth of our solar system to examine whether the key to our planet's existence might have been the explosive shockwave of an ancient supernova. Meet a chemist who has yielded a new kind of "recipe" for natural processes to assemble and create the building blocks of life.

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