Oops! You need to enable JavaScript in your browser to start watching. ITV4 Jeremy Wade's Mighty Rivers Mississippi Series 1 - Episode 5- America’s mighty Mississippi is under threat - from alien invaders, toxic run-off, and massive man-made disruptions. Thu Thursday 23 Sept 1.50am 60 mins 5 days left Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share