A Ukrainian model who has cast herself as a real-life Barbie doll says she eventually hopes to live without eating or drinking. Valeria Lukyanova, whose doll-like features and ultra-thin waist have stirred controversy in the past, has apparently made it her goal to survive "on air and light alone." "In recent weeks I have not been hungry at all," Lukyanova said, according to the International Business Times. "I'm hoping it's the final stage before I can subsist on air and light alone." The website...