Drs. Joel Zivot (left) and Mark Edgar, of Emory University Hospital in Atlanta, first found evidence of pulmonary edema in inmate autopsies in 2016. Their findings are now at the forefront of legal challenges to lethal injection across the country.

Dr. Joel Zivot an anesthesiologist/critical care at Emory University Hospital in Decatur, Georgia on Thursday, January 16, 2020.