Harboring a naughty sexual fantasy? You're far from alone. Your desires likely fall into one of three titillating scenarios. Is your interest aroused?

Do you have a type? More than one, perhaps? Find out what goes on when we're drawn to someone sexually and the many factors that fuel these turn-ons.

Labor pains. Delivery trauma. The miracle of childbirth is difficult under the best of circumstances. Why is it so tough, and how can it be made better?

Where do babies come from? Medical advances mean more and better reproduction options. So why do so many people still struggle to conceive a child?

Birth control has been around for millennia, so why isn't it better? From the pill to IUDs, discover why pregnancy prevention remains such a challenge.