Many believe that most people dislike individuals who have sex with a lot of partners—although one's definition of “a lot” is highly subjective. In study after study, promiscuous people are seen as ...

New research shows that variation in mating behaviors, parental care and differences in ornamentation of the sexes in bird species is driven by demographics rather than vice versa. An international ...

LONDON — In the first comprehensive global study of sexual behavior, British researchers found that people aren’t losing their virginity at ever younger ages, married people have the most sex, and ...

New research shows that variation in mating behaviours, parental care and differences in ornamentation of the sexes in bird species is driven by demographics rather than vice versa. An international ...