Post Docs & Associates

First Name Last Namesort descending Position Research Interests
Connor Cox Research Associate

Offshore Wind, Renewable Energy Finance

Benjamin Goldstein Research Fellow

sustainable food supply chains in cities; urban agriculture; beef hoofprint of cities

Dimitrios Gounaridis Research Fellow

GIS, remote sensing, spatial analysis, land use/cover change, scenario-based simulation.

Xiaoyi He Research Fellow

Life cycle assessment, autonomous vehicles, electric vehicles, individual travel patterns, GPS data, lightweighting materials, emission inventory

Martin Heller Core Staff, Research Specialist

Life Cycle Assessment of Food and Agricultural Systems; Food System Sustainability; Sustainable Diets; Integrating Nutrition and Environmental Impact

Heller, M. (2019) "Waste Not, Want Not: Reducing Food Loss and Waste in North America Through Life Cycle-Based Approaches." United Nations Environment Programme (Download full report here.)

Nicholas Kemp Research Associate

 My current research is centered around a life cycle perspective on autonomous vehicles. Other interests in sustainability research include food systems and biomimicry

Geoffrey Lewis Core Staff, Research Specialist


  • Associate Professor (tenured), School of Planning, Faculty of Environment, University of Waterloo. Waterloo, ON Canada. 2014-2016.
  • Assistant Professor, School of Planning, Faculty of Environment, University of Waterloo, Waterloo, ON Canada. 2008-2014.
  • Engineer, Westinghouse Electro-Optical Systems. Orlando, FL.
  • Engineer, Raytheon Missile Systems Division. Bedford, MA.
  • Engineer, Kollsman Instrument Company. Merrimack, NH.


  • Christidis, T., Lewis, G., & Bigelow, P. 2017. Understanding support and opposition to wind turbine development in Ontario, Canada and assessing possible steps for future development. Renewable Energy 112:93-103.
  • Casello, J., G. Lewis, D.  Santiago, and K. Yeung. 2014. Transit technology selection model. Journal of Public Transportation 17(4): 50-75.
  • Bennett, Claire and Geoffrey Lewis, 2014.  Integrating a triple bottom line approach into the management system: A framework for institutions and businesses alike. In 2nd World Symposium on Sustainable Development at Universities, Manchester UK, September 3-5, 2014.
  • Mallia, Eric and Geoffrey McD. Lewis. 2013. Life cycle greenhouse gas emissions of electricity generation in the province of Ontario. Int. J. LCA 18(2):377-391.
  • Lewis, Geoffrey and Jeff Casello, 2012.  Commonalities between energy and transportation systems – problem-solving across a disciplinary boundary.  In QUEST 2012 International Conference & Tradeshow – Smart Energy Communities in Cold Climates, Winnipeg, MB, November 18-21, 2012.
  • Moore, Michael R., Geoffrey McD. Lewis and Daniel J. Cepela.  2010. Markets for Renewable Energy and Pollution Emissions: Environmental Claims, Emission-Reduction Accounting, and Product Decoupling.  Energy Policy 38(10): 5956-5966.
  • Lewis, Geoffrey and R.J. Laverne, 2009. Catastrophic Loss of Tree Canopy and an Opportunity to Study the Effect of Trees on Residential Energy Use.  In Proceedings of the 4th Annual Canadian Solar Buildings Conference, Toronto, ON, June 25-27, 2009, by the Solar Buildings Research Network.
  • Malkawi, Ali M., Yi, Y. K., and Lewis, G.  2005.  Integrated evaluation of a photovoltaic installation. Journal of Architectural Engineering 11(4): 131-138. 
  • Lewis, Geoffrey McD., and E. Brabec.  2005. Regional land pattern assessment: development of a resource efficiency measurement method.  Landscape and Urban Planning 72(4): 281-296.
  • Lewis, Geoffrey McD., and E. Brabec.  2005. Development of regional measurement methods:  the context for quantifying influence and impact.  Landscape Review 10(1 & 2): 44-48
  • Lewis, Geoffrey M., and Ali M. Malkawi.  2004. Links Between Satellite Thermal Imagery and Building Energy Use.  In Proceedings of the Council for Research and Innovation in Building and Construction: World Building Congress CIB2004 in Toronto, ON, May 2-7, 2004 by the National Research Council of Canada, 677-684.  Ottawa, ON, Canada: NRC.
  • Singh, M., M. Wang, N. Hazard, and G. Lewis.  2000. Quantifying the Fuel Use and Greenhouse Gas Reduction Potential of Electric and Hybrid Vehicles, SAE paper 2000-01-1581.  In Society of Automotive Engineers Future Car Congress in Arlington, VA, April 2-6, 2000.  SAE, Warrendale, PA.
  • Murrell, J. D., G. M. Lewis, D. M. Baker, and D. N. Assanis.  1997. An Early-Design Methodology for Predicting Transient Fuel Economy and Catalyst-Out Exhaust Emissions, SAE paper 971838.  In Society of Automotive Engineers Vehicle Thermal Management Systems Conference in Indianapolis, IN, May 19–22, 1997. SAE,  Warrendale, PA.
  • Laverne, Robert J., and G. M. Lewis.  1996.  The Effect of vegetation on residential energy use in Ann Arbor, Michigan.  Journal of Arboriculture 22(5): 234-243.
Nolan Orfield Core Staff, Lecturer, Research Associate

Dr. Orfield is interested in product design and the role that life cycle modeling can play in the creation of products that serve rather than deplete the planet. His background in both entrepreneurship and academic research position him to understand not only the complex interaction between goods and the natural world, but also the design constraints required for commercialization.

Shen Qu Research Fellow

Shen Qu is a Dow Sustainability Postdoctoral Fellow at SEAS of the University of Michigan. His current research focuses on how environmental risks may impact the global trade network. In particular, he combines tools of input-output analysis and network analysis to uncover the role of international trade in spreading and preventing environmental impacts.

Dwarak Ravikumar Research Fellow

Dwarak Ravikumar is a post-doctoral Research Fellow at the Center for Sustainable Systems (CSS). He is currently investigating the environmental trade-offs for a circular economy for carbon emissions and evaluating if it is environmentally worthwhile to utilize the captured carbon to manufacture products in the chemical and construction sectors. Dwarak’s research interests include developing environmentally improved technologies to recycle photovoltaic systems, advancing life cycle assessment methods to evaluate emerging technologies, and improving the sustainability of renewable energy systems.

John Sullivan Research Specialist

materials, structures, vehicle safety, life cycle assessment, recycling, and sustainability

Chunyan Wang Research Fellow

water-energy nexus