In this episode--the 2nd in a mini-series titled "New Life for America's Big City Rivers"--we discover The Chicago River with Margaret Frisbie, executive director of Friends of the Chicago River. In 1673, indigenous people showed French explorers where they could portage their canoes from Lake Michigan into the Mississippi watershed with just a one-and-a-half mile carry. The spot became known as the Chicago Portage and the trade and travel route ultimately gave rise to the Chicago Metro...