A growing number of U.S. scientists are participating in science-related advocacy and activism. Doing so requires skills and knowledge that should be part of every researcher’s professional development: Knowing how to communicate your research to non-experts, how to convey credibility and confidence, and having an awareness of how your work might end up in political crosshairs.  In this town hall, attendees will learn these skills, as well as how they can safely and effectively serve as expert witnesses, discuss issues with members of Congress, and participate in the federal public comment process for proposed rulemaking. A primary focus will be on why and how scientists should separate personal advocacy and activism from their professional role. We’ll also discuss how federally-funded scientists can be politically active without violating anti-lobbying laws, and use a variety of avenues to promote evidence-based policies in the executive, legislative, and judicial branches of government.