Elizabeth Rogers, co-writer of The Green Book, The Everyday Guide to Saving the Planet, One Simple Step at a Time

One of the biggest challenges I face as a mother comes in a strange shape and size. It is something that often keeps me up at night, and I have on many occasions tortured my seven-year-old son for not following my very specific directions about how to handle it. It is the dreaded PLASTIC BAGGIE.

Baggies in my house are a red flagged item. As a mother who is concerned about the environment, getting a shade greener every day (and raising a son who is obsessed with the environment), baggies take up a lot of airtime in our house. Why? Why do Baggies get this much attention? Well, it's simple.

I have almost perfected packing him a waste-free lunch. Every morning we wake up and pack a healthy organic lunch in his reusable, insulated lunch bag made from recycled plastic soda bottles, with the green frog print on it (now that is a product all moms must have). But every so often, my perfectly balanced (well, not really -- what mom has anything perfectly balanced?) waste-free lunch goes awry... when my son cries out for chips in his lunch.

If he wants chips, what do I put them in? I have everything else down to a science, and in my calculations I have figured out that in a year's time the average school lunch creates as much weight in waste as a nine-year-old child! So with this in mind, when the call for chips comes, I cringe, grab a baggie, and recite the following rules to my seven year old...