Researchers successfully transplanted genetically modified pig hearts into two recently deceased people connected to ventilators, the New York University team announced today. The surgeries are the latest step forward in the field of animal-to-human transplants, or xenotransplantation, which has seen a flurry of successes so far this year — raising hopes for a new, steady supply of organs to ease shortages. The only thing different about these heart transplants from a normal human-to-human heart transplant was the organ itself, the research team said in a statement. “Our goal is to integrate the practices used in a typical, everyday heart transplant,...