NEW YORK (CBS 2)-- A new study suggests there may be a biological reason for infidelity. A group of New York researchers say it's all in the genes -- and not your blue ones. When it comes to monogamy, ...

Research shows that females can maximize the genetic quality of their offspring by being promiscuous. Researchers studied red junglefowl and found that mating with different males helps females ...

We reveal the top and bottom 10 of 'Premier League of Monogamy' HUMANS are less likely to cheat than chimps – but are more prone to promiscuity than beavers. They’re the findings of a major study into ...

Sex is one of those things that nearly everyone has an opinion about. Although people are generally hesitant to talk about their own sex lives, ask them what they think about what others are doing ...