Science of Laughter
Description
Right from the start of our lives, we all laugh. But why? Is our sense of humor what sets us apart from the rest of the animal world? Horizon meets the gorillas who bond through shared laughter, and travels to Washington State University to find out how tickling rats might help us treat depression. This is a global quest to discover the positive power of laughter—with some surprising results.
Runtime
51 min 46 sec
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