In this February 2, 2017 photo, cousins from the Avila family search for discarded toys on the shores of Lake Titicaca, in Coata in the Puno region of Peru. The shores of South America's largest lake are littered with dead frogs, discarded paint buckets and bags of soggy trash. Less visible threats lurk in the water itself: highly toxic levels of lead and mercury. (Photo by Rodrigo Abd/AP Photo)
