"The Economics of Welfare" by A. C. Pigou is a significant academic book that was originally published in 1920 and addresses the challenges of externalities in the economy. The work provides an in-depth analysis of market inefficiencies, particularly concerning environmental issues such as pollution. Pigou's approaches to solving these problems remain relevant and form the basis for many modern discussions in welfare economics and environmental economics. The 2013 edition brings the author's timeless concepts into a contemporary context, making them accessible to both students and professionals. The book is available in a paperback edition and is aimed at readers interested in policy and government interventions in the economy. It is an essential work for anyone looking to understand the development of economic theory and its application to current societal challenges.