and ifif we don't prprotect ite will lose thororangutan. 80% s sumatra's raiainforest s didisappearedvover the last0 years.s. that means the orangutans' natural habitat is disappearing. none of them could survive in an oil palm or acacia plantation. these monocultures are completely different from their natutural habitat. thatat's why it's so impornt that we e preserve the remainig 20% ofof the rainfororest. reporterer: the focus now is n preservingng therotectededreas that alreadydy exist. itit's too late e for ythingng . amoy h h also found a nehomeme in the bukit tigululuh nionall park, where e'e's noliving i itit's too lthe wi.or ythingng . all the orangutans in this nature reserve were born in captivity -- each one with its own story. rimbani has lived in the wild for years. right now she's coming back totf her yoyoung son radjdja. pepeter: when yoyou observe anan orangutan,n, you often s see behaviors that are typical of . you can really seehat t wee closely related. each animamal is an indidivida different character, and a different t speed at whichch y leararn new thingsgs. th