Facts About Your Tears
Newborn babies cry, but without tearing up. Babies don't have fully formed tear ducts and do not produce tears for about 4-13 weeks.
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10 Things You Didn't Know About Tears
Key Facts In This Video
Every time you blink, tears fall from glands that help you see. (0:23)
Crocodiles cry when eating. (1:23)
Butterflies feed off the tears of some turtle species. (2:20)