Rock Doc

My household accumulates quite a number of plastic shopping bags. Most come home with me from the grocery store. I use them to line the little garbage pail that sits under the kitchen sink and the wastebasket that's in the bathroom. I also have the joy of using them to pick up poop deposited by Buster Brown, my faithful mutt from the pound.

But if you don't have uses for the plastic shopping bags you bring home, what do you do with them? Researchers hope that one day -- perhaps sooner rather than later -- your bags may be turned into alternative fuels such as diesel. That's right, plastic shop...