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Hi-tech test to find elusive sawfish  
Scientists can now reliably predict which bodies of water contain the endangered and elusive sawfish species -- by conducting a simple test.  
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Cardinals may be shielding Atlanta residents from West Nile virus, study finds  
A bird species that does a poor job spreading West Nile virus but is particularly likely to get mosquito bites may explain why human infections with the disease are relatively uncommon in Atlanta, Georgia -- despite evidence of high rates of virus circulating in the local bird population, according to a new study.  
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