If you had the power to save a life, would you do it? If you knew you could save the life of someone who would surely die without a kidney transplant, would you give them one of yours? These are the questions that burned in Rabbi Dr. Shmuly Yanklowitz. He had that power, that knowledge. Could he go through with the surgery to donate a kidney to someone who desperately needed it? The more he considered it, the less he could imagine not donating. The...