Tourists look at the Coatepeque Lake in El Cerro Verde national park in Izalco, El Salvador August 24, 2016. The color of the water in the Coatepeque lake has changed due to the proliferation of algae... more 
Tourists look at the Coatepeque Lake in El Cerro Verde national park in Izalco, El Salvador August 24, 2016. The color of the water in the Coatepeque lake has changed due to the proliferation of algae species Microcystis aeruginosa and Oscillatoria sp., according to results obtained from an analysis of samples taken on Monday by the Ministry of Environment. REUTERS/Jose Cabezas less 
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Reuters | Photo By JOSE CABEZAS / REUTERS
Wed, Aug 24, 2016 7:37 PM EDT