A pointless fashion trend? Chimpanzees wear blades of grass in their ears and rears
Peer-Reviewed Publication
Updates every hour. Last Updated: 19-Oct-2025 11:11 ET (19-Oct-2025 15:11 GMT/UTC)
A team of researchers from Utrecht University, Durham University, and other institutions observed something remarkable at a chimpanzee sanctuary in Zambia. Several chimpanzees from one particular group were seen dangling blades of grass from their ear holes or their behinds, for no apparent reason. The behaviour was not seen in other chimpanzee groups at the same sanctuary, despite similar living conditions. “This shows that, like humans, other animals also copy seemingly pointless behaviours from one another,” says Utrecht University researcher Edwin van Leeuwen. “And that, in turn, may offer insights into the evolutionary roots of human culture.”
POSTECH Achieves First-Ever Ribosomal Synthesis of Cyclic Peptides : Opening New Avenues for Next-Generation Drug Design
Dr. Xuyu Qian, newly appointed Assistant Professor at the University of Pennsylvania and Children's Hospital of Philadelphia, has published groundbreaking research in Nature (2025) mapping human brain development at unprecedented single-cell resolution. His innovative use of spatial transcriptomics to analyze over 18 million cells reveals how the human cerebral cortex forms during fetal development. Combined with his widely-adopted brain organoid protocols (cited over 2,000 times), which helped establish the link between Zika virus and brain malformations, Dr. Qian's human-centric approach promises new therapeutic strategies for neurodevelopmental disorders including autism spectrum disorder and malformations of cortical development.
Landmark research on MCL-1, a critical protein that is an attractive target for cancer drug development, helps explain why some promising cancer treatments are causing serious side effects, and offers a roadmap for designing safer, more targeted therapies.
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The findings reshape our understanding of how cells survive and thrive, with implications for both cancer treatment and developmental biology.
According to a new scientific study, conflict between males and females is very frequent among primates, representing over half of all conflicts. The winning gender in confrontations varies considerably from one species to another [1]. Strict dominance (over 90% of confrontations won) for either gender was observed in less than 20% of the populations studied. Conducted by CNRS researchers [2] in collaboration with teams in Germany, these results will be available the week of 7 July in the journal PNAS.