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Episode Clips

Are Cats More Expressive Than We Think?

Why it’s so hard to tell what your cat is thinking.

Are Cats As Easy to Train as Dogs?

Tips on how to train your cat.

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Mysteries of Sleep

Why do we sleep? And what does sleep have to do with memory, trauma, and our emotions?

Dog Tales

Follow the epic journey of dog domestication and see what science says about dogs’ love.

Polar Extremes

Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.

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