The formation of smog in urban atmospheres involves the interaction of sunlight with an air mixture containing nitrogen oxides and reactive hydrocarbons -- the most reactive class of these hydrocarbons being alkenes. This important new book, by a team of leading atmospheric chemists, reviews and evaluates the existing literature on the atmospheric chemistry of these compounds, focusing on the search for a more quantitative understanding of the phenomenon which can then be applied to control methods. It includes detailed examinations of the reactions of alkenes and even suggests areas for further laboratory studies. This book is ideal for climatologists, meteorologists, and scientists studying the chemistry of the atmosphere and can also serve as a valuable text for graduate courses in atmospheric chemistry and atmospheric science.