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Men, here is one good reason to wear red today.

“The pill,” one of the most common forms of birth control, is taken by millions of women every year. Because it is so widely used, recent research has examined whether this hormone-altering pill actually affects mating habits. Find out more.

Recent research examined whether height predicts jealousy in relationships and how this differs for men and women. Find out more.

Recent research on crying suggests that tears can benefit close relationships. Find out the evolutionary meaning behind tears and how they could be helping you.