MacArthur Genius and MIT professor Linda Griffith has built an epic career as a scientist and inventor, including growing a human ear on a mouse. She now spends her days unpacking the biological mechanisms underlying endometriosis, a condition in which uterus-like tissue grows outside of the uterus. Endometriosis can be brutally painful, is regularly misdiagnosed and misunderstood, and has affected Griffith’s life along with the lives of over 6 million other women in the U.S.