The first state-of-the-art book dealing specifically with lung injury induced by oxygen and nitrogen radicals, this detailed treatise discusses molecular, cellular, and mechanistic events leading to pathophysiological outcomes; the role of oxidant species in the induction of these events; and potential therapeutic avenues targeting such molecular pathways. Important issues regarding oxidative stress involvement in the initiation and progression of pulmonary diseases-including diseases caused by occupational and environmental inhalation of toxicants-are discussed in the context of amelioration by antioxidants.