In this day in age, most of us understand that gender identity can be pretty complicated from a social, cultural and psychological perspective. Find out why doctors may have trouble distinguishing someone's gender.
With leagues across the country and a new documentary TV series roller derby is enjoying a surge in popularity. But what exactly is roller derby? Learn about the sport's history its rules and much more.
Competitive eating has gone from county fair exhibition to mainstream spectator sport. Networks like ESPN air contests and competitors like "The Black Widow" have loyal fan bases. Learn more about this controversial practice.
Splat! You're hit -- covered in brightly colored paint. Who shot you? Your friend, who was tracking you silently from tree to tree. Who came up with this game, sport or phenomenon we call paintball? Many trace its origins to military training -- are they right?
Paintball has developed into a worldwide phenomenon. Players hunt opponents, take aim and splatter them with paint-filled “bullets” in guerilla-style faux warfare. If you've never played, you may have wondered what it's all about…
The things people do on ice rinks are so spectacular we sometimes forget how remarkable ice rinks themselves are. Maintaining a proper ice rink is a real feat of engineering. Get a behind the scenes look at this very cool technology.