The four parts of this book - the problem, managing the problem (mitigation), managing the problem (warnings and technology), and related hazards - is a collaborative effort across different boundaries and disciplines, identifying key challenges, areas of progress and opportunities. The book emphasizes that it is the social science links that need most attention, viz., research on warnings, warning response and risk communication. Further, the work must be seen in the context of sustainable policies, so that economic growth is not compromised and a longer term outlook is adopted.