Elizabeth Rogers is a working mother who is passionate about our environment. She transformed that passion into The Green Book, a collection of 500 "little things that make a big difference" in changing the environment, Elizabeth says.

One of those simple things you can do is to reduce your use of paper napkins…by just one a day! "Napkins make a huge difference," Elizabeth says. "We use 2,200 of them a year, per person on average. Six a day. So if we all gave up one napkin a day, we could save a billion pounds of paper waste … from going to landfills a year."