Organ transplantation has dramatically changed lives and is raising hopes it could do even more for millions of people. But getting where we are has not been easy. A transplant surgeon traces the history of transplant research and notes the courage to fail among pioneering researchers and patients.
Research shows that friends are the most powerful people in our lives, influencing our behavior, attitudes and health even more than our parents or spouses. An expert discusses the many ways friends determine our destinies.
A look at the top medical headlines for the week of April 14, 2019.