Something is blinding American Crocodiles living in Costa Ricas Tarcoles River and Brady Barr is on the case. What could be causing this devastating condition? Turns out-- the Tarcoles River is one of the most polluted waterways in South America. Could deadly pollutants be the smoking gun or is something even more sinister at work?
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Ready to Watch National Geographic Dangerous Encounters, Season 2008, Episode 5?