This paper provides an overview of trade, environmental and related public issues and policies. It discusses the pollution problem, the recent global warming trend, the attempts of various institutions, including the United Nations, the World Trade Organization, regional, national and other organizations, to solve the global trade and environmental issues. The paper also discusses a number of basic theoretical issues and empirical findings, such as the free‐rider problem, the tragedy of the commons, the theory of second best, the relative efficacy of price and quantity control, carbon leakage, border carbon adjustments, the cap‐and‐trade system, the pollution haven hypothesis, the optimal social discount rate and the environmental Kuznets curve. Some computable general equilibrium models are reviewed and several notable World Trade Organization environmental and health‐related trade dispute cases are analysed, including the tuna–dolphin, shrimp–turtle, eco‐labelling, beef‐hormone and genetically modified organism cases.