National Public Radio: MICHEL MARTIN, HOST: So it's not exactly beach weather on the East Coast but in parts of the country, it is. Think about how many times you've walked along the beach and been disgusted by the mounds of plastic. You're not alone. By the year 2050, the world's oceans will have as much plastic as fish. That's according to researcher Nicholas Mallos from the nonprofit advocacy group, Ocean Conservancy. The group's work was cited recently at the Davos World Economic Forum in Switzerland. Mallos says...