What is a river? A geological formation, water flowing over land, habitat… A more fitting question for this trip through the heartland is: what is our relationship to rivers? Humans seek to live in association with rivers. They are a source of water, food, transportation, commerce, and hazard– and a place where we satisfy a need to connect with the living and the natural. The last stop on this 5,000+ mile trip through the heartland is Memphis, Tennessee on the Mississippi River where I talk to two engineers with the Memphis District of the U.S. Army Corps of Engineers about the future of Engineering With Nature. More to come.