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Known as "Mr. Trash Wheel," this floating device sucks up plastic from polluted harbors. Baltimore’s harbor is cleaner than it has been in decades thanks to two anthropomorphic trash wheels pulling debris from its waters. Mr. Trash Wheel and Professor Trash Wheel, the latter of which was installed in December, are solar- and hydro-powered trash interceptors based in Baltimore's Inner Harbor, clearing debris before it enters the Chesapeake Bay. Over a million pounds of trash has been pulled out of the water by Mr. Trash Wheel since it was installed in May 2014. The trash wheel’s creator, John Kellett, worked on the harbor for years and saw garbage floating on the water every day. A sailor and engineer, he approached the city and offered to take a stab at cleaning up the harbor. He built a pilot trash wheel and installed it in 2008. No one had ever tried to stop the trash before and the task seemed daunting. Kellett quickly realized he’d have to go bigger. The pilot wh