Gary Hastings is a Professor of Biophysics in the Department of Physics and Astronomy at Georgia State University (GSU) in Atlanta. He also holds a courtesy appointment in the Chemistry Department at GSU. Gary is primarily a vibrational spectroscopist, using time-resolved infrared difference spectroscopy to study photosynthetic proteins and other light-activated proteins. In other areas, Gary leads projects using infrared microscopy and nanoscopy to study biological cells under stress, from infrared spectroscopy studies on how antibiotics impact bacterial cells, to how viruses impact mammalian cells, to how water quality and nutrient stress impact cyanobacterial cells to impact biofuel production or algal blooms.