The morning sun slants through the canopy of Senegal’s Niokolo-Koba National Park as Sgt. Abdou Diouf and his brigade of ...

Across southeastern Liberia, oil palms grow wild in the forest. Known as “country palm,” the Elaeis guineensis tree is native ...

In some Amazon rivers in Brazil, cases of diseases related to inadequate basic sanitation, such as malaria and acute diarrhea ...