Humans are far more monogamous than our primate cousins, but less so than beavers, a new study suggests. Researchers from the University of Cambridge in England analyzed the proportion of full ...

Over the past 125,000 years, the average size of mammals on the Earth has shrunk. And humans are to blame. That's the conclusion of a new study of the fossil record by paleo-biologist Felisa Smith of ...

Two chimpanzees meeting with each other apparently have a discussion using hand gestures, one of the human-like characteristics of other mammals. (Getty Images) Of the 8.7 million species on Earth, ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. This voice experience is generated by AI. Learn more. This ...

Human childbirth is commonly viewed as uniquely difficult and dangerous. The reason: The combination of bipedalism and large ...

Of the 8.7 million species on Earth, why are human beings the only one that paints self-portraits, walks on the Moon and worships gods? For decades, many scholars have argued that the difference stems ...