Why do onions make you cry?

Cutting into an onion will break open its' cells releasing noxious sulfur fumes. When this gas hits your eyes *KABOOM*, the tears start flowing. This is due to the mild sulfuric acid that is produced when the gas dissolves in the watery tears. You react to this eye stinging by blinking and producing even more tears which will eventually flush out the irritating acid. Please resist the urge to rub your eyes, especially if you have onion juices all over them.

Avoiding the tears:
Water:
Wash an onion after the first cut.Cut by cold running water.
ColdPeel and then chill the onions in the refrigerator (1 hour) or freezer (15 minutes) before chopping.
Air:
Cut an onion on a breezy porch or with a fan blowing away from your face.Turn your head away while chopping (watch those fingers!!).Breath with your mouth open exhaling through your nose.
Romantic:
Light a candle near the chopping block.

Technique:
Cut along the vein not across it.Cut with a very sharp knife. Cut near the bottom of the onion last, where the root is.
Look weird
Wear large glasses or goggles. Hold a lemon, piece of bread or a sugar cube in your mouth, the food will absorb the gas before it reaches your eyes.

I have come to the conclusion that some people cry some people don't. If they make you cry it will all be worth when you taste your delicious meal. Happy chopping!!!