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The story of the harnessing of cold and the race to reach the lowest temperature possible.
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Surprising fossils from northeastern China spur a debate over how birds evolved.

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An elite corps of U.S. astronauts is trained to gather intelligence on the Soviets.
NOVA  ·  Episode 3503

Secrets of the Parthenon


How did the ancient Athenians build this near-flawless icon of Greece's golden age? Secrets of the Parthenon received a 2009 Emmy nomination for Outstanding Science, Technology and Nature Programming.

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