This new anthology is a comprehensive introduction to the field of risk theory. The introduction provides a starting point for students and professionals new to risk studies and offers a concise refresher for researchers and practitioners. Coverage includes the origins of the 'concept of risk' and its often misunderstood cousin 'uncertainty', before moving on to address risk perception, risk communication, the idea of trust and post trust as well as risk in policy and regulation with a close look at the Precautionary Principle.