Book excerpt: Resolving the escalating issues surrounding climate destabilization will be one of the most important environmental challenges we face this century. Dr David Sanborn Scott, one of Canada's foremost energy experts, clearly demonstrates that we have only one real choice - Hydrogen. Using literate, lay-accessible, sometimes lyrical but never trivial explanations, Smelling Land gives a clear and comprehensive examination of: The architecture of civilization's energy systems; The critical role of energy currencies and the widespred blunders when this role is not recognized; How to evaluate environmental intrusion and general principles for environmental gentility; The mechanisms and status of climate disruption; Sustainability and the REASONS for a coming Hydrogen Age; Energy source options -to identify realistic expectations and expose myths; The wonders of hydrogen systems, from airplanes, to cars, submarines, laptop computers, mobile phones and heart pacers; How fast we can get to the Hydrogen Age (if we wake up to the true severity of the climate risk), why and what it will be like.