Four-time Olympic gold medalist Simone Biles won her fifth all-around world championship Thursday night at the World Gymnastics Championship in Stuttgart, Germany. She won by 2.1 points — the largest margin of victory in her career — and now holds 22 world medals. The African-American gymnast is a survivor of sexual assault by former USA Gymnastics team doctor Larry Nassar, who has been convicted of sexually assaulting and abusing more than 160 young female athletes.