Paul Fleischman offers teens an environmental wake-up call and a tool kit for decoding the barrage of conflicting information confronting them. We're living in an Ah-Ha moment. Take 250 years of human ingenuity. Add abundant fossil fuels. The result: a population and lifestyle never before seen. The downsides weren't visible for centuries, but now they are. Suddenly everything needs rethinking -- suburbs, cars, fast food, cheap prices. It's a changed world. This book explains it. Not with isolated facts, but the principles driving attitudes and events, from vested interests to denial to big-country syndrome. Because money is as important as molecules in the environment, science is joined with politics, history, and psychology to provide the briefing needed to comprehend the 21st century. Extensive back matter, including a glossary, bibliography, and index, as well as numerous references to websites, provides further resources.