BICYCLE as a mode of communication is non- polluting, require little parking space, comparatively economic and provide much needed exercise in sedentary societies.

WIND POWER is a source of wind farming and generating electricity, which is pollution free and is increasingly becoming popular. World wide its capacity utilisation is much below its potential. This time wind farming machineries and wind turbines manufacturing are eco- friendly industries.

HYDROGEN is increasingly being looked into as an alternative to hydro-carbon based fuel economy at present, where hydro-carbon fuel sources like mineral oils etc. are gradually being exhausted. This is also comparatively pollution free. Hydrogen as a part of water is abundantly available in nature. Hydrogen generation and hydrogen- based energy economy progresses to fuel the auto-car, industry etc

FUEL CELL is an alternative source of electricity and gradually replaces internal combustion engines in automobiles and other industrial fields which is comparatively pollution free. This time solar cell is increasingly becoming popular, specially in rural areas where electricity is out of reach

SOLAR HEAT is an abundant source of energy which is pollution free. The scope of solar heating is very much under-utilised because of its irregular variation etc. This time specially designed SOLAR OVENS are good alternative to conventional ovens for domestic cooking under sunshine. However, in village areas where sunshine is abundantly available unlike urban areas where it is arrested in concrete & construction jungles it will be good source of domestic cooking. More so where demand for cooking wood is causing deforestation solar oven will serve a good purpose. Solar heating is also utilised for hot water in public places/hotels etc. In some cases solar heating is used on large scale for generating electricity. This time the SOLAR HEATING industries are eco-friendly

TREE PLANTING: on large scale is a part of forestation and reforestation. It is now increasingly being looked into as an industry which will provide industrial wood, domestic wood and fuel wood.