Mongabay: It may not surprise you to hear that monocultures of oil palm (tree species of the Elaeis genus) do not support a great diversity of species in comparison to primary forests. But just how bad is it? A recent study systematically documented bird biodiversity within oil palm plantations, finding they contain fewer species than secondary forest and even cattle pasture. As oil palm grows as a commodity in Brazil and can legally even be used to "reforest" land how can a country that has made big gains...