CORUMBA DE GOIAS, Brazil — In 20 years, veterinarian Daniela Gianni had never seen a jaguar burned as badly as Amanaci, a female injured in the wildfires crackling through Brazil’s vast Pantanal wetlands. Gianni is the operational coordinator of the NEX Institute, an organization that defends wild cats, and which is using experimental stem cell treatment to tend to jaguars’ …
