This volumes comes out of a symposium, sponsored by the Society for Risk Analysis and the National Science Foundation, which explored practical methods and robust theories of risk communication arising from recent research in risk perception, neuroscience, and the evolutionary social sciences. The symposium addressed how humans process and perceive uncertainty and risks. The purpose of the symposium was to synthesize the findings from these diverse fields to inform the development of practical strategies for risk communication. "NOTE: Annals volumes are available for sale as individual books or as a journal. For information on institutional journal subscriptions, please visit www.blackwellpublishing.com/nyas." "ACADEMY MEMBERS: Please contact the New York Academy of Sciences directly to place your order (www.nyas.org). Members of the New York Academy of Science receive full-text access to the Annals online and discounts on print volumes. Please visit http: //www.nyas.org/MemberCenter/Join.aspx for more information about becoming a member"