While the debate over our changing environment rages on, one thing remains clear: being green is a hot topic—socially, politically, and economically. Whether you’ve “been green� from birth or don’t even know what the three “Rs� stand for, 48 Things To Know About Sustainable Living can help you make small, affordable (or free!) changes that will have a major impact on the environment and simplify your everyday life. Chock-full of tips and useful Web sites, 48 Things will show you how to easily become planet-friendly by:  Discovering eco-friendly substitutions for everything from food and clothing to appliances, cleaning products, office supplies, and transportation Reducing waste and electricity, saving you time and money Taking advantage of both modern green technology and renewable natural resources