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Episode Clips

Do Dogs Love Us or do They Just Want Treats?

It's time to learn the truth once and for all.

Can Bones Reveal How Dogs Evolved from Wolves?

Learn more about the evolution of our furry companions.

More Episodes

Cat Tales

Goddess, demon, house pet? What does science say about the human relationship with cats?

Mysteries of Sleep

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

Polar Extremes

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

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