Ellen DeGeneres, Robert Redford, Will Ferrell, Jennifer Aniston, Faith Hill, Tim McGraw, Martha Stewart, Tyra Banks, Dale Earnhardt, Jr., Tiki Barber, Owen Wilson, and Justin Timberlake tell you how they make a difference to the environment. Inside The Green Book, find out how you can too. Don't ask for ATM receipts. If everyone in the United States refused their receipts, it would save a roll of paper more than two billion feet long, or enough to circle the equator fifteen times! Turn off the tap while you brush your teeth. You'll conserve up to five gallons of water per day. Throughout the entire United States, the daily savings could add up to more water than is consumed every day in all of New York City. Get a voice-mail service for your home phone. If all answering machines in U.S. homes were replaced by voice-mail services, the annual energy savings would total nearly two billion kilowatt hours. The resulting reduction in air pollution would be equivalent to removing 250,000 cars from the road for a year!