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Passport: Show | Hide

New archeological finds shed light on this misunderstood monument of the ancient world.
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Passport: Show | Hide

Elevators have transformed our cities and our lives, but how safe are they?

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Engineers and NASA scientists aid an all-out effort to save 33 trapped Chilean miners.
NOVA  ·  Episode 3714

Dogs Decoded


How smart are dogs, and what makes them such ideal companions?

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