TV on the Web: 'Why Do We Cry?' explains tears

Daniel Hurwitz, special for Paste BN | USATODAY

Today's pick: Why Do We Cry? on YouTube

The topic: Educational YouTube channel ASAP Science explores the evolutionary reasons for tears.

Why we're watching: Haven't you ever wondered why emotional situations cause salt water to flow from your eyes? We find out if emotional tears are exclusive to humans.

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