Three Exxon refineries top the list of U.S. polluters

Since the start of the year, the International Maritime Organization (IMO) has banned ships from using fuels with a sulphur content exceeding 0.5%, from 3.5% earlier, unless they are equipped with sulphur-stripping devices known as scrubbers. Scrubber retrofits and removals of older fleets with a high compliance cost are expected to lead to fleet tightening, …

polluters”