Professor Reid has been an assistant professor at Cornell since 2016. Previously, he was a postdoctoral scientist at the Swiss Federal Institute of Technology (EPFL) in Lausanne, Switzerland, where he studied anaerobic biotransformations of arsenic and links between biogeochemical cycling of arsenic in paddy soils and uptake into rice plants. His doctoral research at Princeton University focused on couplings between physiochemical transport and biological cycling of nutrients and trace gases in wetland environments. He has also worked as a high school chemistry teacher with the U.S. Peace Corps in Tanzania and as a laboratory technician in chemical oceanography at the Lamont-Doherty Earth Observatory.


Scott Maguffin

Scott comes to us from the University of Oregon where he conducted his PhD research on biogeochemical reactions in natural water systems; specifically, he investigated arsenic cycling and organic arsenic production in a naturally contaminated aquifer. Scott was awarded a National Science Foundation Postdoctoral Research Fellowship and is excited to continue his arsenic research as part of the Reid research group at Cornell University.  Scott also is very interested in his community, science, and environmental policy and has worked to further the incorporation of empiricism in local and federal legislation. At the local level, he has volunteered for science education non-profits, the VA, and public schools. He is currently working in Washington DC with the American Geophysical Union to promote good science policy within government.  Scott loved living in the Pacific Northwest but is happy to be coming back to his home state of New York. He enjoys an active lifestyle, particularly basketball and soccer as well as spending time outdoors hiking, traveling, and camping.


Graduate Students

Philip McGuire

I grew up in Delaware and attended the University of Delaware, where I obtained my Bachelor of Environmental Engineering in 2016. While at UD, I worked in a wastewater treatment laboratory where I investigated several topics including the extraction of polyhydroxyalkanoates from microbes and nitrate removal by engineered rapid infiltration basins. Under Matthew Reid at Cornell, my current research seeks to obtain a better understanding of the evolution of gases – particularly nitrous oxide – from the aqueous phase to the gaseous phase in the subsurface. Insight into this process is intended to further our grasp of the role that incomplete denitrification plays in global warming and manners of mitigating its effects. In my spare time, I enjoy exploring the outdoors and sites around Ithaca as well as watching movies.



Lily Falk

Lily Falk is a junior at Cornell studying Environmental Engineering. This year Lily will work to complement Phil’s project on oxygen inhibition of nitrous oxide reduction. In the spring of 2017 Lily worked with Philip McGuire to build a planar optode for the lab to measure dissolved oxygen concentrations. Lily is interested in using engineered systems to create a sustainable future on earth.