Appropriate technology, Waste management, Sewage, Autonomous building, Municipal solid waste, Earthship, Adobe, Rammed earth, Compressed earth block, Dutch brick, Cob (material), Microgeneration, Stand-alone Power System, Drinking water, Greywater, Water purification, Grow house, Solar cooker, Cook stove, Einstein refrigerator, Natural ventilation, Windcatcher, Solar chimney, Information and communication technologies for development