Failures lead to investigation, examination, innovation, and redesign into improved, safer, and more efficient components and structures. In this course, we study engineering failures that have occurred across a wide range of disciplines, and examine why they happened. This includes a discussion of the fundamental engineering concepts at play (e.g. stress corrosion cracking, creep, high cycle fatigue), as well as the path by which these factors caused the disaster under study, and the ethics involved in each case.