A solar-powered water wheel is helping to purge the waters of Baltimore's Inner Harbour of trash and debris.

The Inner Harbour Water Wheel is using renewable energy to remove copious amounts of garbage from Baltimore’s maritime environment. The device is the brainchild of John Kellett, who takes his inspiration from Baltimore’s golden age of industry in the late 19th century, when water-powered mills were used to process the myriad commodities that were…