Carol W. Greider is a prominent American molecular biologist known for her groundbreaking research in the field of genetics, particularly her contributions to the understanding of telomeres and their role in cellular aging. Greider’s work has significantly advanced the comprehension of the mechanisms that protect chromosomes from deterioration, thereby impacting the study of cancer and aging. In 2009, Greider was awarded the Nobel Prize in Physiology or Medicine alongside Elizabeth Blackburn and Jack Szostak for their discovery of how telomeres and the enzyme telomerase function. This recognition underscores the importance of her research and its implications for understanding various diseases, including cancer, where telomere maintenance plays a crucial role. Throughout her career, Greider has not only contributed to scientific knowledge but has also been an advocate for women in science, promoting diversity and inclusion in the field. Her dedication to research and education has inspired many young scientists to pursue careers in molecular biology and genetics. Carol W. Greider, born on April 15, 1961, is an esteemed molecular biologist celebrated for her pivotal studies in telomeres and telomerase. She completed her Ph.D. at the University of California, Berkeley and has held various academic positions, making significant contributions to our understanding of chromosome protection. In 2009, Greider was honored with the Nobel Prize in Physiology or Medicine, alongside Elizabeth Blackburn and Jack Szostak, for their discovery that elucidates the relationship between telomeres and cellular aging. This accolade highlights her influential role in genetic research. Beyond her scientific achievements, Greider is recognized for her commitment to fostering diversity in the sciences. She actively supports initiatives that encourage women and underrepresented groups to engage in STEM fields, making her not only a scientist but also a mentor and advocate for future generations of researchers.