July 29 (UPI) -- Joan Anderson, a largely unknown Australian woman who spent decades unacknowledged for introducing the world to the now-iconic hula hoop, has died. Anderson, who moved to the United States in 1946, noticed what would become the fad while on a trip visiting family in Australia years later, according to the Australian Broadcasting Corporation's obituary . She observed a curious craze that involved groups of giggling people swinging wooden hoops around their waists. An intrigued