For decades, the farmers of East Africa have battled the African whitefly, a tiny insect that infests the cassava crop. Cassava, also called manioc, arrowroot or tapioca, is an important food all over the world — more than half a billion people (yes, billion with a b) rely on cassava for their daily meals. For East African farmers, a whitefly infestation can completely destroy the year’s […]