This book on climate change is unique because the author has experience from different, even opposite, perspectives: - University teacher in Urban Planning, Environmental Science, and Engineering. - 15 years of work for environmental groups dealing with climate change, public transit, and sustainable development. - 20 years for Hydro-Quebec as Senior Advisor, Climate Change. - Years of research on life-cycle assessments (LCAs) of energy options. • His expertise in energy was recognized by the International Energy Agency and the Intergovernmental Panel on Climate Change (IPCC). He has published numerous articles. • With a life-cycle approach, he is able to identify when promoters or politicians make misleading promises due to political correctness. • In sum, his experience allows him to detect when communications are self-serving and designed to impress, without concern for the truth.