Orangutans can’t master their complex diets without cultural knowledge
Peer-Reviewed Publication
Updates every hour. Last Updated: 9-May-2026 05:16 ET (9-May-2026 09:16 GMT/UTC)
Diets of wild orangutans are “culturally-dependent”: adult Sumatran orangutans have knowledge of around 250 edible food items, which is more than any one individual can attain without learning from other individuals.
Developmental experiments “in silico”: using computer simulations based on 12 years of observations on wild orangutans, researchers show that orangutans fail to develop “adult-like” diets if deprived of key social interactions that facilitate learning.
Deep roots of cultural inheritance: adult orangutan’s diets are the product of information that many different individuals must have discovered and learnt from each other. Humans’ capacity to accumulate broad cultural repertoires – to breadths no individual could produce alone – is potentially a capacity that evolved at least 13 million years, in our common ancestor with great apes.
The Israel Observatory on Femicide, directed by Prof. Shalva Weil from the Seymour Fox School of Education at the Hebrew University, reports a troubling surge in femicide across Israel, with 32 women killed because they were women since January. The data point to rising firearm-related murders and distinct cultural dynamics influencing the patterns of violence. The Observatory calls on policymakers to act swiftly to prevent further loss of life.
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Researchers at Karolinska Institutet in Sweden have identified a brain circuit that can drive repetitive and compulsive behaviours in mice, even when natural rewards such as food or social contact are available. The study has been published in the journal Science Advances and may contribute to increased knowledge about obsessive-compulsive disorder and addiction.
In the current selection round, the German Research Foundation (DFG) has granted funding for two new Collaborative Research Centres at the University of Konstanz. Over the next four years, the research teams will be working intensively on trigger signals in biological cells as well as on "silence" and "noise" in human speech.
After surpassing the 600-scholarship milestone last year, this year the remarkable generosity of private individuals, companies, and institutions enabled Goethe University to set a new participant record. A total of 280 private individuals, 45 companies, and 52 nonprofit organizations donated a €1,116,000 to Goethe University in 2025, which according to the matching principle was doubled by the Federal Ministry of Research, Technology and Space (BMFTR). This translates into a total of €2,232,000 raised for scholarship recipients.
Combining genetic risk with cardiovascular disease risk factors — such as high LDL cholesterol, obesity, and hypertension — may predict who is more likely to develop dementia, according to a new study led by UC San Francisco.