The book "Regional Externalities" by Wim Heijman offers a comprehensive analysis of the impacts of external effects on society and the environment. It examines how decisions made by individuals or groups can unintentionally create costs or benefits for others. Negative externalities, such as pollution from industrial activities or traffic, are addressed alongside positive externalities, which often receive less attention, such as the unpaid pollination services provided by beekeepers. Heijman highlights the economic implications of these phenomena and argues that the existence of externalities leads to suboptimal outcomes in the economy, as the marginal costs of a product do not align with its price. This academic book is a valuable resource for students and professionals who wish to explore the complex interactions between economic decisions and their social and ecological impacts.