LAUSANNE, Switzerland (AP) -- A new form of volleyball aimed at allowing shorter players to succeed was approved Friday by the sport's governing body. The new game, with the provisional name of Challenge Volleyball, will be open to men below 6 feet and women below 5-6. ``According to demographic studies, some 97 percent of men and 95 percent of women in the world's population are under these height limits,'' said Anne Peytavin, president of the medical commission of the International Volleyball Federation. Volleyball with a height limit already has been introduced in Brazil. On the final day of its meeting,...