In this February 4, 2017 photo, Naty Lugano Quispe cleans fish nets in Kapi Cruz Grande, a village on the shore of Lake Titicaca, in the Puno region of Peru. A 2014 study suggested officials limit some fish consumption, but area inhabitants said they weren’t informed about the study or told they could be consuming fish containing mercury, cadmium, zinc and copper at levels higher than those advised for human consumption. (Photo by Rodrigo Abd/AP Photo)
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