Aziz Sancar, MD PhD is Sarah Graham Kenan Professor of Biochemistry and Biophysics at the University of North Carolina School of Medicine. He was born in Savur-Mardin, Turkey in 1946. He obtained his primary and secondary education in Savur and Mardin, and then received an M.D. degree in 1969 from the Istanbul University School of Medicine. After practicing medicine in Savur for two years he attended the University of Texas at Dallas and obtained a Ph.D. degree in Molecular Biology in 1977 with his work on DNA repair. Dr.Sancar conducted postdoctoral work at Yale university on molecular biology of DNA repair in the period 1977-1982. He joined the Department of Biochemistry and Biophysics at UNC Chapel Hill in 1982 where he has been conducting research on DNA Repair, Cell Cycle and cancer treatment, and the Biological Clock. He has published 288 research articles and 33 book chapters. Prof. Sancar is a Member of the National Academy of Sciences USA, a Member of The American Academy of Arts and Sciences, a Member of Turkish Academy of Sciences and the recipient of the Vehbi Koc Award from the Koc Foundation of Turkey in 2007. Aziz Sancar lives in Chapel Hill with his wife Gwen Sancar, also a professor at UNC-Chapel Hill.