From the tar sands of Alberta to the oil refineries of Texas, the Keystone XL pipeline poses an array of potential environmental and public health risks along with its advertised economic benefits. Farmers, Native Americans, city dwellers and small town residents -- all living along the proposed path -- shared with The Huffington Post why they oppose the project. We'll roll out their stories over the coming weeks, ahead of the White House's final decision on Keystone's fate. (The State Department is accepting comments on its analysis report until April 22.)

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