Onions, Emotions, and Why We Cry by SciShow

Hank Green of SciShow explains what causes humans to cry and the three different types of tears that the body manufactures in their latest video “Onions, Emotions, and Why We Cry”.

Have you ever wondered why we cry? In today’s episode of SciShow, Hank gives us the answer, covering different types of tears and whether we are the only species to get all teary eyed during the final scene of a good movie.

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