NOVA
The Planets Series Trailer
The life of our solar system told in five dramatic stories spanning billions of years.
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The Planets: Mars Preview
Before it was a dry planet, Mars was a wet world that may have hosted life.
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Beyond the Elements: Reactions
Discover the fascinating chemistry that makes our world and everything in it—including us.
NOVA
The Cannabis Question
As state-legalized cannabis spreads, NOVA explores its little-known risks and benefits.
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Thai Cave Rescue
Follow the harrowing operation to rescue 12 boys stranded in a flooded cave in Thailand.