David is using his background in chemistry and nanotechnology research to investigate environmental health issues. His work focuses on finding ways to change national environmental regulations and government policies to protect public health. During his five years at EWG he has developed comprehensive knowledge of the regulatory processes affecting industrial chemicals, consumer products, cosmetics and nanomaterials. David has conducted more than 100 media interviews on various public health issues and frequently deals with federal agencies and legislative offices. He holds a B.A. in chemistry from Wesleyan University (Connecticut) and a Ph.D. in chemistry from Northwestern.