Spanish rescuers have ended their underwater search for Natalia Molchanova, a world-renowned Russian free diver who disappeared during a recreational swim this weekend, but will continue looking for her on the water's surface. Galina Zveryaeva of AIDA, the international diving federation, said that effort "will continue for several days." Molchanova, a 23-time world champion holding 41 different records under her belt, was regarded by many as one of the greatest ever in the sport of free-diving. "She was a free-diving superstar,” Kimmo Lahtinen, president of AIDA, told The New York Times. Molchanova, of Moscow, was capable of holding her breath...