At an environmental health laboratory in Santa Fe, New Mexico, Abigail Bradley, PhD, DABT, investigates how chemical contaminants move through ecosystems and human tissue. A toxicologist for 25 years, she earned her doctorate at Baylor College of Medicine. Her current research focuses on the cellular mechanisms of heavy-metal toxicity and long-term solvent exposures in workplace settings. Bradley regularly reviews chemical safety data for occupational monitoring programs.