Anthony J. Hoffman http://kcur.org en Green Impact Zone & The Missouri River http://kcur.org/post/green-impact-zone-missouri-river <p>You probably know that the Missouri River is the longest river in North America.&nbsp; But did you know that it's also one of the most polluted?</p><p></p><p></p><p> Wed, 19 Dec 2012 00:00:00 +0000 Jabulani Leffall, Matthew Long-Middleton and Jeffrey Harvey 29230 at http://kcur.org Green Impact Zone & The Missouri River