This presentation provides an overview of environmental impact assessments (EIAs). It defines EIAs as processes that evaluate the environmental, social, and economic impacts of proposed projects. The document traces the history and development of EIAs, including their introduction in the US and other countries in the 1970s and their adoption in India in the late 1970s and 1980s. It outlines the key stages of EIAs, including screening, scoping, impact analysis, mitigation, reporting, and decision-making. The presentation concludes that EIAs are beneficial for ensuring projects are environmentally sustainable.