Distinguished professors are faculty members who demonstrate exemplary performance in research or creative work, a record of excellence in classroom teaching and supervision of individual learning, and outstanding service to the profession, the university and its affiliates. The CU campuses nominate faculty for the award, the highest honor bestowed upon faculty across the system's four campuses. President Mark Kennedy then reviews the nominations and, with the recommendation of the Distinguished Professors Committee, forwards the candadates' names to the Board of Regents. At CU Boulder since 1991, Han has distinguished himself as a national and international authority in molecular and developmental biology. He has run a highly dynamic research program in his lab, addressing cutting-edge problems in diverse biological fields related to human health. He has developed and taught many courses within molecular, cellular and developmental biology, while also actively participating in international educational efforts. His impact as a mentor and teacher is also noteworthy, as many former trainees have advanced to significant careers in higher education and industry.