The book provides an overview of the state-of-the-art of the intrinsically interrelated disciplines: combustion science and technology and physical chemistry of atmospheric pollution. It contains original articles written by world-renown experts in these disciplines. The volume will be useful for practicing engineers and researchers working in the field of combustion, propulsion, and atmospheric chemistry, experts in environmental protection and safety, and can serve as a reference book for graduate students in combustion science and technology.