Norwegian billionaire Nell Inge Rokke, a former fisherman who made his fortune in the oil industry, will fund the building of a 596-foot ship that can remove and men 5 tons of plastic debris a day from the world's oceans. The research vessel will have a crew of 40, with space for up to 6 scientists. "I want to give back to society the bulk of what I've earned." Rokke says in published reports. "This ship is a part of that"