The EU is picking up speed with climate protection regulations. For imports from abroad, a carbon tax will soon be introduced. But poorer countries could be unfairly disadvantaged by this. Last year, the European Union announced plans for a 55% reduction in its greenhouse gas emissions by 2030, setting its sights higher than the 40% it had targeted before. Achieving this more ambitious goal will require the EU to rapidly restructure its high-emission industries. That, in turn, means major polluters in the bloc will be asked to pay higher CO2 prices, all but forcing them to switch to more climate-friendly...