The article discusses how environmental impact assessments are conducted in Canada, focusing on the process, public participation, and predicting environmental impacts. It also explores the evolution of federal environmental assessment, the role of science in assessment, and the challenges faced in assessing social and cumulative impacts. The study highlights the importance of collaboration and integration in environmental assessment, especially in regions like the Northwest Territories and Yukon. Overall, the research emphasizes the need for effective impact assessment practices to ensure sustainable development and environmental protection across different Canadian jurisdictions.