Big Love

Are we naturally polygamous, or is monogamy in our nature? Plus: Why people cheat, how monogamy became the new normal, and the pros and cons of keeping the faith—or not.

Relationships

Love is the most profound emotion known to human beings. For most people, romantic relationships are the most meaningful element in their lives. But the ability to have a healthy, loving relationship is not innate. Almost all of us have experienced a failed relationship, and most of us have to work consciously to master the skills necessary to make them flourish.

Sex

At least for humans, this most basic act is anything but simple. As the pioneering sex researcher Alfred Kinsey put it, the only universal in human sexuality is variability itself. Within the universe of intimacy and pleasure that sex affords, however, there's a lot of room for error. From the behavior itself to our orientations, sex never fails to be a provacative topic.