The evolution of sex, gender, mating strategies, and social relationships are hot topics in the study of nonhuman and human behavior. 1 People from many different disciplines are weighing on these and ...

Human behavior is a tapestry woven from culture, environment, and biology. Among the most intriguing aspects of this tapestry is risk-taking—those bold, sometimes reckless decisions that can lead to ...

Stories centered around true love's kiss might be tales as old as time. And, according to a new study, kisses might even have been around before humans walked the earth. Humans kiss each other ...

VANCOUVER, Wash. – While many studies have looked at possible evolutionary links between men’s strength and sexual behavior, a Washington State University study included data on women with a ...

While many studies have looked at possible evolutionary links between men's strength and sexual behavior, a Washington State University study included data on women with a surprising result. Women, as ...

Scientists have traced kissing back to early primates, suggesting it began long before humans evolved. Their analysis points to great apes and even Neanderthals sharing forms of kissing millions of ...

A study has challenged previous evolutionary theories about strength, masculinity and sexual behavior. It has long been believed that stronger men have more sexual partners because of the evolutionary ...

What seems like a simple human gesture may actually carry roots far deeper in our evolutionary past. A new study has uncovered evidence that kissing evolved in the common ancestor of humans and other ...

Evolution is perhaps the most extraordinary story ever told—a tale spanning billions of years that connects every living thing on Earth through an intricate ...