Supersizing has become an American way of life. We have XXL cars, homes, and waistlines. We built the world's tallest monument. We get the largest breast implants. We're home to the world's largest retailer, sports stadiums, and office building. But with a deep recession and our nation's leaders urging us to reassess the impact of our daily lives, it has become impossible to ignore the effects--on our environment, finances, communities, and psyches--of...