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Chimps Count
Sally Bosyen has taught her chimps to count, perform addition, and even understand fractions.


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Who Needs Words Anyway?
Rio the sea lion and Sheeba the chimp can handle abstract concepts like differences between groups, or how a small model represents a large object.


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Machines Who Think
Contestants try to guess who is on the other end of their cyberchat - person or computer?


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Powers of Ten
A classic 1977 short film takes us on a jaunt through the solar system to demonstrate the relative size of everything from atoms to the stars.


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Shelter From the Storm
Biologists in South Carolina build new nests for the endangered red cockaded woodpecker population left homeless by Hurricane Hugo in 1989.


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High Rollers
This story follows the first trials of a new kind of rollercoaster design, allowing cars and riders to roll upside down, like in a jet fighter.


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