Dyson vacuum cleaners have been cleaning the floors of homes for years, but now the company’s founder wants to clean something much more important: Pollution-filled rivers. In a recent interview, James Dyson revealed he has sketched a design for a river barge that can harvest some of the waste that our rivers carry. Then it would sort the waste into different grades using the same cyclone technology found in the company’s vacuum cleaners. Once harvested, the materials could be transported to recycling facilities and repurposed in any number of ways.