This is "Mr.Trash Wheel" – a water wheel in Baltimore that removes rubbish from the river. The water wheel is powered by the river's current, which lifts rubbish and debris from the water and ...

Baltimore’s Trash Wheel Family — Mr. Trash Wheel, Professor Trash Wheel, Captain Trash Wheel and Gwynnda the Good Wheel of the West — have certainly kept busy in a decade’s time scooping ...