Belinda Elida Barja

Belinda Elida Barja

Meridith Kohut/Bloomberg

Belinda Elida Barja holds one of her sons in her living room in the town of La Oroya, Peru. Most of La Oroya’s children suffer elevated lead levels, according to the Peruvian government. Parents say some have symptoms, all consistent with lead poisoning, that include anemia, convulsions, stunted growth, mental retardation, and more.