A new study comparing 59 species of primates linked same-sex sexual behavior to scarce resources and more predators in ...

The human body evolved over eons, slowly calibrating to the African savanna on which 98 percent of humankind lived and died. So, too, did the human brain. Evolutionary psychology is the study of the ...

More than 59 different primate species have been observed participating in some kind of same-sex behaviors, making it extremely common.

As a confessed evolutionist, I thought Nora S. Newcombe’s “Is Sociobiology Ready for Prime Time?” (The Review, December 13) was better than most critiques of sociobiology. However, I would disagree ...

From popular culture to the dark corners of the internet, there are many claims about “fundamental” differences between people on the basis of gender, racial or ethnic groups, sexuality, or other ...

Same-sex behavior is widespread in primates and may help strengthen social bonds and improve survival under challenging conditions.

The study of animal behaviour in ecological and evolutionary contexts examines how behavioural traits develop, persist and interact with environmental challenges. Research in this field investigates ...

John Maynard Smith is best known for his use of mathematical analyses in biology. Trained as an engineer and then as a biologist, Smith applied game theory to animal behavior and found that although ...

Most pet behaviors are cute, but many of them may come from instincts developed by thousands of years of evolution. To learn more, put together a list of ways household pets have evolved as they’ve ...

Scientists revealed in a new study Monday that genes associated with same-sex sexual behavior may be evolutionarily advantageous to humans, helping to improve reproduction. (CN) — Scientists revealed ...