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Research Associate

Contact Info

Center for a Livable Future, Johns Hopkins Bloomberg School of Public Health, 111 Market Place, Suite 840

Research Interests

Environment, sustainable agriculture, food security, ecology

Experiences & Accomplishments
Johns Hopkins University
Harvard University

Center for a Livable Future

Honors & Awards

The Polly Walker Fund for Ecology (established at JHSPH in 2008), Delta Omega Honor Society in Public Health ,2001 Maryland Governor’s Citation, 1990 Maryland Environmental Trust Award, 1990 Garden Club of America Award, 1990 Irvine Natural Science Center Conservationist Award, 1989

Select Publications
  • Amir Sapkota, Amy R. Sapkota, Margaret Kucharski, Janelle Burke, Shawn McKenzie, Polly Walker and Robert Lawrence. Aquaculture practices and potential human health risks: Current knowledge and future priorities. Environment International, 34 (8): 1215-1226, (Nov 2008)

  • Lisa Y. Lefferts, Margaret Kucharski, Shawn McKenzie, and Polly Walker. Feed for Food-Producing Animals--A Resource on Ingredients, the Industry, and Regulations. CLF Report, 2007. Download PDF

  • Amy R. Sapkota, Lisa Y. Lefferts, Shawn McKenzie, and Polly Walker. What Do We Feed to Food Production Animals? A Review of Animal Feed Ingredients and Their Potential Impacts on Public Health. Environmental Health Perspectives, 115 (5): May 2007.

  • Polly Walker, Pamela Rhubart-Berg, Shawn McKenzie, Kristin Kelling, Robert S. Lawrence. "Public Health Implications of Meat Production and Consumption," Public Health Nutrition 8(4), 348-356, June 2005.

  • Polly Walker and Robert Lawrence. "Challenges of Greening a Decentralized Campus: Making the Connection to Health". Chapter in: Barlett P and Chase G (Ed).Sustainability on Campus Stories and Strategies for Change. MIT Press, 2004.