Reuters: Countries have agreed new sulfur limits for ship fuels that will slash air pollutants and clean up the world’s oceans, but raise costs for the oil and ship industry, a maritime industry source said on Friday. Governments agreed the new measures, which will sharply cut harmful sulfur dioxide (SO2) emissions from ships through a staggered timetable to 2015, at a U.N. International Maritime Organization (IMO) meeting in London. “It’s a very significant agreement because it means …