Dr. Elizabeth Blackburn and Dr. Carol Greider are pioneers in the study of telomeres, segments of DNA that help determine the number of times a cell divides, an event that affects the life span and health of cells, and the development of some cancers. Carol Greider was a graduate student of Dr. Blackburn's at the University of California, Berkeley in 1985, when she discovered the enzyme telomerase, which creates telomeres. This discovery has spawned a whole new field of research, with Dr. Blackburn and Dr. Greider in the forefront. Blackburn and her team at the University of California, San...