sometimes to the sweet sounds of a little karaoke. 23 rivers rolled on because chad, one person, decided to make a difference. >> the mississippi river is one of the most famous rivers in the world. historically helped build the country. people get their daily drinking from it. it's a huge migratory flyway for all the birds. it's almost like a huge national park. i grew up right on the river. and i always took it for granted. everything you can imagine winds up in the river somehow. refrigerators, stoves, tires, cars, trucks. we're talking millions of pounds of garbage. let's see what it's like. this stuff just collects here and it goes on for blocks like this. it's a bad deal. as i got older, i realized this should not be like this. and if no one else is doing anything about it, i will. the first year, it was just