Short answers, pulled from the story.
The word orangutan likely originated from Malay terms meaning person and forest, yet its journey into English involved Portuguese intermediaries who dropped the initial h sound. By 1693 physician John Bulwer used the spelling Orang-Outang in his writings that version persisted in English until modern times despite being considered incorrect by linguists today.
A third species emerged definitively in 2017 when researchers identified the Tapanuli orangutan living south of Lake Toba. This new species proved more closely related to Bornean orangutans than to its fellow Sumatran relatives and exists solely in Batang Toru forest with fewer than 800 individuals remaining.
Orangutans possess 48 diploid chromosomes compared to the 46 found in human cells while adult males stand approximately two meters tall and weigh around ninety kilograms. Their hands feature four long fingers with a dramatically shorter opposable thumb designed for gripping branches securely and they rarely descend to the ground where movement becomes cumbersome compared to other great apes.
Scientists comparing data from six different field sites found each population employed unique tools reflecting cultural differences rather than habitat variations. Wild populations in Tuanan utilized leaves to amplify kiss squeak sounds during acoustic communication attempts and social contact facilitated transmission of behaviors across groups suggesting distinct cultural repertoires exist between communities.
Conversion of vast tropical forests into palm oil plantations drives rapid habitat loss responding to international demand while logging mining activities further fragment ranges reducing viable living spaces significantly since the early 2000s. Between 2012 and 2017 Indonesian authorities seized 114 orangutans thirty-nine confirmed as illegal pets alongside bushmeat trade operations that generate significant profits for traffickers.