Human activities are altering rivers and ocean ecosystems in dramatic ways. Science is one way of knowing this, and of communicating it. But it’s not always the most effective way. Robert F. Perkins is a multimedia artist who has been solo canoeing in the Arctic for close to thirty years. He’s also canoed the Limpopo River in Africa, and the Connecticut River – right here in our own backyard. Not surprisingly, he says there's a common theme: more people, more contamination and degradation.