If there is one word today that is repeated in the four corners of the World, that word is undoubtedly "globalization". Customs, habits and consumer preferences have become standardized. The same solutions are offered for different problems. Today, our planet is our laboratory, and one of the most controversial concepts within this new reality is "sustainable development". In this book, engineer Jaime Rotstein calls our attention to different approaches to the energy issue in Brazil. In his view, the country should no longer follow models imposed from outside; rather, it must begin to seek its own road in the use of clean and renewable energy.The struggle to defend his ideas began when the author was a member of the Brazilian National Energy Commission. There, he ardently defended the National Fuel Alcohol Program. His struggle continues in his presentation here, with compelling arguments on hydroelectric power, natural gas, solar energy, public transportation, science and technology, environmental management, and a new start on development.Arguing logically and convincingly, Rotstein points to what we must, and specially, what we must not do in order to never pass the environmental "point of no return".This is a book that sketches for us a world of possibilities - so far from the incoherence and lack of real debate that describes the country's current situation.The ideas presented here are vital not only to the future of Brzil, but to the World as well.