By Nancy Lapid (Reuters) – Surgeons at New York University (NYU) have successfully transplanted genetically-engineered pig hearts into two brain-dead people, researchers said on Tuesday, moving a step closer to a long-term goal of using pig parts to address the shortage of human organs for transplant. The hearts functioned normally, with no signs of rejection during the three-day experiments in June and July, they said at a news conference. The experiments followed the death in March of a 57-year-old man with terminal heart disease who made history two months earlier at the University of Maryl…