At 40, she's earning a master's and educating the world on maternity risks
                                
                                
                                    (Newser) -
                                    Christy Turlington still considers modeling her work—“It’s the only thing that pays me; everything else is school or volunteerism,” the Columbia masters candidate, often described as one of the world’s most beautiful people, tells Vogue. “My face is a dime a dozen in many...