déchets (1) tendance (1) gaz à effet de serre (1) Development (1) Urbanization (1) Twenty-first century (1) Population (1) Performance (1) Hand (1) Engines (1) Energy consumption (1) Cities and towns--Study and teaching (1) Sustainable living (1) Space (1) 21st century (1) Population (1) Performance (1) Energy consumption (1) main (1)