The document discusses the role and principles of risk communication (RC). It defines RC as an interactive process of exchange of information among individuals, groups, and institutions about the nature of risks and concerns, and it helps people understand the nature of risks and actions needed to manage risks. The document outlines some key challenges of RC, including lack of accurate basic information, and pressure from media and unofficial sources distorting information. It also identifies core principles of effective RC such as building trust, transparency, early communication, active listening, and developing communication plans.