Ever looked at the mountain of liquids (or, in my case, that luscious, unopened jar of dulce de leche, and countless yogurts) accumulated at airport security and wondered where they end up? Yeah, me too. I've always hoped they go to charity and the water bottles recycled, because I have a bit of an idealist streak beneath my jaded exterior.

Our friend Andy Bender over at Forbes helped get to the bottom of this tricky question, and the answers are somewhat surprising. Rather than being palmed by greasy-haired or hungry TSA agents (cause for immediate termination), large airports divvy up the booty by category and dispose of it accordingly, although smaller volume airports may just lump it as trash.

If you lie awake nights pondering the fate of your spendy conditioner or lotion, here's the breakdown:

• Liquids are sorted by type (sunscreen, shampoo, alcohol, contact lens solution, etc.) and emptied into hazmat barrels, which are then collected by waste management companies. They're disposed of according to environmental regulations (Forbes reports that "water-based solutions are sent to a waste water treatment facility or waste energy recovery facility aka trash-to-stream plant."
• Alcohol ends up being treated at fuel-blending facilities because it's flammable.
• Large quantities of bottles are "chipped" and recycled, but not smaller volumes, which go to the landfill.

For more information on current regulations taking liquids in carry-on, click here. And here's a tip: by carrying a refillable water bottle, you help reduce the 1.5 million barrels of oil required for U.S. plastic water bottle production each year.

Gallery: Strange items prohibited by the TSA

[Photo credit: Flickr user stevendepolo]

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