From the CNN profile:
Tony Hansberry, 20, Jacksonville, Florida
Tony Hansberry was likely the only 14-year-old boy making a difference in gynaecology. Attending a high school with a program geared towards medicine gave Hansberry the chance to intern at the nearby UF Health Shands Hospital in Gainesville, Florida. There, he was challenged to improve how the vaginal cuff (the top of the vagina) is sutured after a hysterectomy. Typically, the cuff is sewn together with a horizontal stitch to decrease the risk of infection after surgery, but Hansberry suggested that a vertical stitch might be faster.