For decades, small grooves on ancient human teeth were thought to be evidence of deliberate tool use – people cleaning their ...

Even tiny marks can carry important meaning. One recurring feature is the thin groove across exposed tooth roots, especially ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more ...

Dr. DeLong is a cognitive psychologist with expertise in comparative cognition and perception. She has a B.A. from New College of Florida and a M.A. and Ph.D. from the University of Hawaii. Prior to ...

When conservationists relocate orangutans to protect them from deforestation and human conflict, they believe they are giving these great apes a second chance. However, research suggests that this ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more ...

Loui the orangutan hitting the floor of his enclosure with a stone tool. Photo: Motes-Rodrigo et al., 2022, PLOS ONE, CC-BY 4.0 Captive orangutans can use stone tools without minimal direction from ...

A Kalimantan orangutan was born at the Gembira Loka Zoo in Yogyakarta on June 4, 2021. ANTARA/HO-KLHK/aa. (Handout KLHK) Jakarta (ANTARA) - Indonesia's Environment and Forestry Minister Siti Nurbaya ...

New research from the University of Tübingen demonstrates that nut-cracking can emerge in Sumatran (Pongo abelii) and Bornean (Pongo pygmaeus) orangutans through individual learning and certain types ...

Wild Bornean orangutans (Pongo pygmaeus) catabolize muscle tissue when the availability of fruit is low, according to new research led by Rutgers University scientists; that’s remarkable because ...