The Copenhagen Summit has highlighted that the main chunk of CO2 is created by our electricity needs. Almost 50% of the pollution of the world comes from here and this if anything, is a reminder for a country like India that has high coal fuel dependency, to look at the viability of alternative fuels...

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Source: http://economictimes.indiatimes.com/news/news-by-industry/energy/power/The-promise-of-an-alternative-fuel/articleshow/5349710.cms