The Waterfront Partnership of Baltimore has found a way to both keep trash out of the ocean and appeal to tourists. Their inner harbor water wheels snarf up plastic bags, cigarette butts, styrofoam and other waste flowing into the Inner Harbor from the troubled Jones Falls River. Since 2014 two of these contraptions have retrieved over 1.5 million pounds of trash from the harbor. The water wheels draw their energy from river currents and the sun. read more