The weather had cooled significantly. We were certainly in a different local climate having traveled up the Mississippi River over four days with stops in Vidalia, Louisiana; Natchez, Mississippi; Vicksburg, Mississippi; Jackson, Mississippi; Memphis, Tennessee; and Cairo, Illinois before making it to St. Louis, Missouri, our second pilot city in the Mississippi River Plastic Pollution Initiative (more on the stops in between in subsequent posts). We had learned so much about the history and ...