When the Ellen MacArthur Foundation launched its New Plastics Economy initiative two years ago, it made a dark, headline-grabbing prediction. It said if nothing is done to arrest the rate at which plastic is entering the oceans, those oceans will contain more plastic than fish by 2050. But the good people at the Ellen MacArthur Foundation, a U.K. nonprofit named after a record-breaking British sailor, is more optimistic than it was back in 2016.