Sometimes a strange but simple fact—that onions make you cry, for example—is so accepted that you forget to ever stop and wonder...why? That is, until you're chopping with a 3-year-old who gets mad at you because you made her weep for no reason. For example.
How Does It Work?
So, What Can I Do?
Watch 'Em And Weep: Videos About Onions and Tears
Why Do Onions Make Us Cry?
Scientific American breaks it down even more.
Key Facts In This Video
Cutting an onion ruptures its cell walls, releasing enzymes that bind to other compounds to create the lachrymatory factor. 00:21
When the lachrymatory factor gasses waft into the eyes, neurons signal tear production to wash out the potentially harmful chemical. 00:51
Researchers in Japan and New Zealand have collaborated to create a tear-free onion. 01:39
Onions, Emotions, And Why We Cry
Not all tears are the same.
How To Chop Onions Without Crying
Tip 1: Use a sharp knife.
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