Sex

Human sperm cells get an extra oomph forward as they swim, thanks to interconnected elastic springs in their tails that communicate with other regions of the tail, a new study finds.

The number of surgeries done to confirm a person's gender identity, also referred to as sex reassignment surgeries, has increased in recent years.

Just because a judge makes it to the Supreme Court, that doesn't mean the person gets to speak freely: A new study finds that female justices are interrupted more than male justices.

Today's high school seniors believe in gender equality at work, but are becoming more traditional in their beliefs about home life.

The entire female menstrual cycle has been replicated in a bento-box-like device that can fit into the palm of your hand.

Something's up in bedrooms across America that's driving sexual activity down.

Experts are still debating whether women need a pelvic exam at their yearly visit to a gynecologist.

Dads who looked at a picture of their kids, showed more activity in certain parts of their brains after a boost of oxytocin via a nasal spray.

For young children, how we speak is often more important than what we say. Even 'positive' generalizations can lead children to adopt negative stereotypes.