The damage from the fires, of course, is not all about regional haze and climate change. The clearing of rainforests is also destroying invaluable reserves of plants and animals. Indonesia is ranked as the fourth most biologically diverse country in the world. The protection of these forests from burning would consequently help safeguard their unique inhabitants, such as the orangutan. The Bornean orangutan (Pongo pygmaeus) is listed by the IUCN as Endangered and the Sumatran orangutan (P. abelii) Critically Endangered, due primarily to destruction of their forest habitat.