Calendar. Alumni (August 6 through October 31) Wednesday, September 25 2:00 PM The Role of Chemical Mixtures in Studying Disease Etiology and Informing Public Health Policy Wednesday, October 2 2:00 PM Health Benefits of Climate and Air Pollution Policy: Novel Methods and Practical Impacts Wednesday, October 16 5:30 PM The Charles L. Donahue Annual Lecture featuring Dr. Jim O’Connell Monday, October 28 7:00 PM BUSPH APHA Alumni and Friends Reception