In light of recent international negotiations over nuclear disarmament and efforts to respond to the use of chemical and poisonous weapons, we sit down with Dr. Erickson to discuss the health and environmental impacts of conflict and emergencies. Dr. Timothy B. Erickson is an emergency medicine physician at the Brigham and Women’s Hospital in Boston where he serves as the Chief of Medical Toxicology in the Department of Emergency Medicine, and a faculty member at the Harvard Humanitarian Initiative. He is an expert in environmental toxicology and crisis in climate change, and has active humanitarian health projects in conflict regions of Ukraine and Syria, as well as ongoing health projects in Nepal and India. Dr. Erickson earned his M.D. degree from The Chicago Medical School in 1986, and is a Fellow of the American College of Emergency Physicians, the American College of Medical Toxicology, the American Academy of Clinical Toxicology, and the National Geographic Explorers Club.