In this February 4, 2017 photo, environmental activist Maruja Inquilla holds a dead bird called a “Choca”, on the shore of Lake Titicaca, in Coata, in the Puno region of Peru. Untreated sewage water drains from two dozen nearby cities, and illegal gold mines high in the Andes dump up to 15 tons of mercury a year into a river leading to the lake. (Photo by Rodrigo Abd/AP Photo)
