Despite Efforts, The Rio Grande Is One Dirty Border

Since Mexico and the United States signed the North American Free Trade Agreement 20 years ago, the two countries have worked to clean up the waterway. The river makes up a large chunk of the border, but despite progress, massive amounts of raw sewage still enter the water each day.

Source: http://www.npr.org/2013/10/22/239631549/despite-efforts-rio-grande-river-is-one-dirty-border?ft=1&f=1003

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