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World Environment Day

The Rio Sucio or "Dirty River," where one branch is colored yellow/brown by the minerals it carries from the Irazu Volcano, is seen mixing with the clear waters filtered by the tropical rainforest in the Braullio Carrillo National Park, 50 km (31 miles) east of San Jose, June 5, 2012.

World Environment Day

World Environment Day, June 5, which was celebrated annually to raise global awareness about environmental issues and stimulate political action.