Prior to joining Olin College, Dr. Geddes served on the faculty at the University of New Hampshire, where he worked on laser-based chaotic communication schemes and pulse dynamics in modelocked lasers. Dr. Geddes also devoted considerable time to the development of a sophomore mathematics course called "Linearity," which integrates the standard sophomore math courses into a year-long sequence. During his tenure at UNH he developed an interest in mathematical biology and currently receives funding from the NIH for a project on the mathematics of microvascular blood flow. Between 1996 and 1998 Dr. Geddes served as assistant professor of mathematics at Ramapo College of New Jersey, where he focused on developing a course on chaos and fractals for freshmen.

Dr. Geddes graduated in 1990 from Heriot-Watt University, Edinburgh, Scotland with a B.Sc. in Physics. He received his Ph.D. in Applied Mathematics in 1994 from the University of Arizona.