Katie Lichter, MD, MPH, is a resident physician in the Department of Radiation Oncology at the University of California, San Francisco (UCSF). She is also a Climate Energy Health Fellow with the UC Carbon Neutrality Initiative and a Harvard/Cambridge Health Alliance Climate Health Organizing Fellow. She co-chairs the ASTRO Climate Change Task force which grew out of resident-led ARRO Climate Health, Equity, and Sustainability Task Force. Additionally, Dr. Lichter is the principal investigator and founder of the GreenHealth lab at UCSF that investigates the interplay between cancer and climate change focusing on mitigation, adaptation, and advocacy efforts.