Dr. Shahin Rafii (Weill Cornell Medicine, New York, NY) is widely recognized as one of the country’s most productive physician-scientists. He has been instrumental in uncovering the important links between hematopoiesis (the process of blood-cell formation) and angiogenesis (the process of blood-vessel formation). Appearing in leading journals such as Nature Medicine, Proceedings of the National Academy of Sciences, and Cell, his research has considerable influence on the development of new therapies against both blood cancers and solid tumors.