One thing I am not able to understand. Governments advocate the slow phasing out of the filament lamps and replacing them with CFLs.The reason repeatedly cited for this is that the filament lamps contribute to the global warming by way of emitting carbon-di-oxide. But, interestingly, it is also clarified that it is not these bulbs which are directly emitting the gas into the atmosphere, but the power plants which work on carbon-burning process emit the gas for producing the electricity consumed by these bulbs. What I can not understand is that even if all the people of the world stop using these bulbs and start using some other Eco-friendly bulbs, how this will help these power plants to reduce the carbon-di-oxide emission, unless this will result in the reduction of the quantity of the power produced itself, by the plants sufficiently. Because, people will continue to use electricity by way of other devices such as air conditioners, fridges, heaters etc. and the electricity requirement is never going to come down. Can any body enlighten on this line?