Keystone XL pipeline would bring tar sands crude oil across Michigan to the Kalamazoo River refineries . Turner : Tar sands oil means clear-cutting about 15 miles , diverting rivers , strip-mining . Pipeline puts drinking water at risk , poses profound danger of toxic spills and more , he says . Follow CNN Opinion on Twitter . Turner : Congress trying to skirt rules and force approval of polluting Keystone XL project .
Keystone XL pipeline would bring tar sands crude oil across Michigan to the Kalamazoo River refineries . Turner : Tar sands oil means clear-cutting about 15 miles , diverting rivers , strip-mining . Pipeline puts drinking water at risk , poses profound danger of toxic spills and more , he says . Turner : Congress trying to skirt rules and force approval of polluting Keystone XL project .