The scientist communicator. Introduction ; The decision to speak out -- A clash of cultures. What you need to know about journalists ; Tell me a story : what journalists want from you ; What the changing world of the media means for you ; What you need to know about policymakers ; Inform my decision : what policymakers want from you -- The how-to toolkit. Deliver a clear message ; Ace your interview ; Fine-tune for radio and television ; Reach out instead of waiting ; Promote a paper ; Enter the political fray -- Becoming an agent of change. After the splash, the backlash ; Leading the way : ten steps to success.