Environmental protection Environmental policy 3 environmental policy 3 pollution tax 3 Climate policy 2 International trade 2 environmental economics 2 Border tax adjustments 1 Cap and trade 1 Cap-and-trade 1 Carbon 1 Carbon leakage 1 Carbon taxes 1 Cleaner technologies 1 Closed-form expression 1 Cobb-Douglas model 1 Collaboration 1 Commerce 1 Computable general equilibrium model 1 Conflict 1 Costs 1 Emission control 1 Emission tax 1 Emissions Trading 1 Emissions tax 1 Emissions taxes 1 Emissions trading 1 Energy economics 1 Energy policy 1 Environmental group 1