Dr. Nigel Walker is a staff toxicologist at the National Institute of Environmental Health Sciences (NIEHS), one of the National Institutes of Health. Dr Walker has over 12 years expertise in environmental molecular toxicology, quantitative dose response modeling and risk analysis, with particular emphasis on persistent organic pollutants. Dr. Walker is currently leading several efforts for the U.S. Department of Health and Human Services’ National Toxicology Program (NTP) including the NTP Nanotechnology Safety Initiative that is evaluating the safety of engineered nanoscale materials.

He has over 60 peer-reviewed publications and two of his recent papers have won best paper awards from the Society of Toxicology. He is regularly invited to give presentations at international meetings and conferences and is regularly consulted as an expert for advisory panels, workshops, as a peer reviewer for grants and journals and for newspaper/magazine and media interviews. He is an adjunct assistant professor in the Curriculum in Toxicology at the University of North Carolina at Chapel Hill and Past-President of the North Carolina Society of Toxicology.

Education:
Postdoc, Johns Hopkins University School of Hygiene and Public Health
PhD, Biochemistry, University of Liverpool (1993)
BS, Biochemistry, University of Bath (1987)