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NOVA
Asteroids: Spark of Life?
Season 53
Episode 1
What if asteroids, long feared as destroyers of life, were key to our existence? Explore a revolutionary theory that these violent collisions provided the essential ingredients – water, minerals, and energy – needed to jumpstart life on Earth.
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53:21
Follow engineers and woodworkers as they rebuild an iconic American covered bridge.
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53:34
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