Orangutan Day: Here’s where the three critically endangered species stand

Aug. 19 is World Orangutan Day, a day to honor the three species of Southeast Asian great apes, all of which are classified as critically endangered by the IUCN, the global conservation authority. Orangutans were classified into two species: The Sumatran orangutan (Pongo abelii) found in northern Sumatra, Indonesia, and the Bornean orangutan (Pongo pygmaeus), […]