Part 1: Theoretical backround and tools: environment and development, sustainable development and other approaches, policies for environment and development, different tools. Part 2: Case-studies: global warming, Waste management-saving-recycling-valorisation. Air conditioning friendly to the environment. Lignite, natural gas and alternative energy resources, technological and environmental approach. Water resources and environment. Environment as an economic activity: a second life for former industrial zones (Lavrio). The role of law in the conflict between environment and development. Part 3: the role of engineer in the conflict between environment and development.