Dr. Linda Birnbaum is a "rock star" in the world of environmental health, a groundbreaking scientist who has devoted her career to studying the potential health impacts of toxic chemicals.

We learn about Dr. Birnbaum's interest in science and notable accomplishments beginning at an early age, and trace her path of education and early career.

Dr. Birnbaum narrates her 40-year career as a leading scientist at the National Institute of Environmental Health Sciences, National Toxicology Program, and Environmental Protection Agency, culminating in her serving as Director of NIEHS and the NTP. She discusses her work studying classes of chemicals including PCBs, dioxins, brominated flame retardants and PFAS.