Primates are an order (Primates) of eutherian mammals characterized by a suite of derived traits associated with arboreal locomotion and enhanced sensory and cognitive capacities. Defining features include grasping extremities with opposable thumbs and, in many taxa, opposable great toes; nails instead of claws on most digits; a postorbital bar or plate; forward-facing orbits enabling stereoscopic vision; and a relatively enlarged brain, especially in regions mediating vision and complex behavior. The order encompasses strepsirrhines (lemurs, lorises), tarsiers, and haplorhine simians (monkeys and apes, including humans), and is a core model group in evolutionary biology, comparative anatomy, neurobiology, and behavioral ecology.
Many people recognize that gender—how a person identifies, presents themselves and is perceived—has nuances. Some people identify and present as women, others as men, and still others as nonbinary.
Other
11 hours ago
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Recent advances in our understanding of human evolution challenge the way we currently name and classify our ancestors, according to new research from Monash University. The study, published in the American Journal of Biological ...
Evolution
14 hours ago
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Between 29,000 and 19,000 years ago, the planet experienced some of its coldest temperatures and drastic landscape changes at the peak of the Ice Age, during the Last Glacial Maximum (LGM), the period of most extensive global ...
Researchers at Karolinska Institutet and Stockholm University have developed a new tool that estimates a cell's biological age by analyzing its gene activity. In an article published in the journal Advanced Science, they ...
Cell & Microbiology
Aug 18, 2026
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Biologists, zoologists and psychologists have been trying to trace the origins of human language for centuries. One well-known theory, known as the social brain hypothesis, suggests that increasingly complex social lives ...
New research suggests that no matter what we eventually determine the last common ancestor of humans and chimpanzees to be, we'll learn it was a primate that climbed trees.
Evolution
Aug 17, 2026
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When people think about climate change and animals, they might picture melting sea ice, drought-stricken landscapes or species struggling in the wild. Far less attention is given to the animals living in our care. Yet as ...
Ecology
Aug 17, 2026
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Cells travel through the body both individually and in collective groups during development, wound healing and diseases such as cancer. New research from the McKelvey School of Engineering at Washington University in St. ...
Cell & Microbiology
Aug 17, 2026
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A book sits atop a table. Although it's closed, its title, "Encyclopedia of Human Tissue," promises untold secrets. Perhaps with this book, you can learn about different cell types and what they look like under normal conditions ...
Cell & Microbiology
Aug 14, 2026
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Adjusting to a new time zone or work schedule can leave the body's internal clock out of sync for days, contributing to sleep disruption, metabolic changes and other health consequences. Researchers at Rice University and ...
Cell & Microbiology
Aug 14, 2026
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