Accidents are seemingly unavoidable parts of modern day city life. In this course, students find out about how and why accidents occur in our living, working, learning and leisure environments. They will learn about the science and engineering of accident prevention and investigation. With this understanding, they can avoid being the causers or victims of accidents. Besides, the knowledge of the potential dire consequences of accidents will enable them to appreciate the importance of safety and health issues in daily life. This course combines Large Class Activities, i.e. lectures, with student-centred project (group work). Students have much opportunity of self-directed learning and team-work experience by conducting their projects. The final project presentation also let student express their ideas and view in innovative and creative ways.