Tool-Using Orangutans Learn Like Humans | WIRED
Secrets of orangutan 'language' uncovered - BBC Science Focus Magazine
Orang Utang Project - Tone Swiss
Home Page - The Orangutan Project
Orangutans | WWF
Orangutans have been adapting to humans for 70,000 years
Orangutan | Species | WWF
Orangutan - Wikipedia
Orangutan Outreach
People are slaughtering orangutans and wiping them out | New Scientist
Where, when, why: Human-orangutan conflict in Borneo - CIFOR Forests News
Orangutans | WWF
Orangutan Outreach
Zero loss of Borneo's orang-utans in Sarawak | Fondation Segré
Factsheet: Orangutans | WWF
Bedrohte Menschenaffen: Kann das Aussterben der Orang-Utans noch verhindert werden?
Schutz der Orang-Utans - Drohnen als Chance für die Tierforschung
TIERWELT Live | Borneo: Schutz der Orang-Utans
Sumatran Orangutan Conservation Programme - Paneco
Dramatic decline in Borneo's orangutan population as 150,000 lost in 16 years | Environment | The Guardian
Orang-Utans: Dramatischen Rückgang der Menschenaffen auf Borneo - DER SPIEGEL
Orangutan Facts - Save the Orangutan
Ecoviews: Student worries about threats to rainforests and orangutans
Orang-Utan-Tag: So können Sie Orang-Utans retten - DER SPIEGEL
