Rolf Halden, Ph.D., P.E., is director of the Center for Environmental Health Engineering at the Biodesign Institute, professor in the Ira A. Fulton School for Sustainable Engineering and the Built Environment, and senior sustainability scientist in the Global Institute of Sustainability at Arizona State University.

Halden is a noted expert in determining where in the environment mass-produced chemicals wind up, their impact on health, and how to remove them from contaminated water resources, aquifers and agricultural soils. Toxins of interest include dioxins, anti-bacterial products, pharmaceuticals and personal care products (PPCPs), organohalides, problematic plastics and their additives, as well as pesticides – all having potential health impacts, including adverse birth outcomes, inflammation and increased risk of cancer.