In this February 1, 2017 photo, environmental activist Maruja Inquilla, left, walks with Auroro Belisario Pacompia at a municipal waste treatment plant whose waters flow into Lake Titicaca, in Juliaca, in the Puno region of Peru. Inquillla is alerting neighboring villagers of the dangers lurking in their food and water. (Photo by Rodrigo Abd/AP Photo)
