Book excerpt: This comprehensive textbook introduces engineers and geoscientists to the structure, practice, and ethics of their professions and encourages them to apply ethical concepts in their professional lives. It is a comprehensive reference for engineers and geoscientists in any branch of these professions, in any province or territory of Canada. The book is intended for practicing professionals, recent graduates, and senior undergraduates and is an excellent study guide for the practice and ethics part of the Professional Practice Examination (PPE) required for licensing in every province and territory.