Engineers and biologists have known for a long time that changes made to the Mississippi River's natural flow to facilitate barge traffic, are harming its overall health. Since 1986, federal and state agencies have experimented with ways to stem the loss of land formations, plants and other things that wild animals need to thrive. One of the most successful of these efforts is a series of man-made islands. Mainstreet Radio's Art Hughes visited the newly-built islands near Stoddard, Wisconsin. boat motor start)