Environmental Impact Assessments (EIAs) identify, evaluate, and propose ways to mitigate development projects’ environmental and social consequences. This ensures that nature-protection and social considerations are included in the decision-making process in order to anticipate, avoid, minimize or compensate for any eventual adverse effects. The course on Principles for Reviewing Environmental Impact Assessments (PREIA) offers tools and strategies to review EIAs following best international practices and IDB policies.