why onion makes us cry...?

i remember, this was explained in an episode of Good Eats on the Food Network. its a natural defense for onions. when cut they let off a type of gas when mixed with the fluid in our eyes it makes us tear. there are simple remedies for it (i love onions but hate cutting them) 1. always cut onions in a well ventilated area. open windows use fans or a vent 2. use a sharp knife to cut 3. rinse the onion in cold water before cutting. is possible, try cutting under the water (don't know how to do that but thats what they said to do) 4. my favorte...buy a good pair of goggles or glasses and wear them when you cut to keep the gas from getting towards your eyes. you may look silly, but you'll be tear free.

I had read somewhere a long time ago that if you cut the bottom off first it will not burn as bad also they say to keep your mouth closed (for me that is hard LOL) I have always cut my up under running water that seems to help some.

Onion makes you cry because YOU ARE CUTTING IT. May be, it don't like us to cut it.. ;) ... Wont you cry when you cut any of your body part ? Just kidding...