With generous dispensing of cheap diesel to rich car owners, the  government has finally turned the market around.  Media is abuzz with the Petroleum Planning and Analysis Cell’s report. It says the diesel consumption growth rate at 6.4 per cent has outstripped that of petrol at 4.5 per cent. Petrol price hikes have made the fuel price gap gape wider and add to diesel’s lure.

For a naive and non-scientist, it would be obvious that the liquefied petroleum gas (LPG) is a clean fuel. Especially in the cities, it is the most common fuel for domestic cooking. There is also a small fraction of light duty vehicles which run on LPG and has proven to be clean compared to their counter parts - diesel and petrol.

An advanced notification system on daily air quality is developed for the National Capital Region (NCR) of Delhi, under the "Clean Air for Delhi 2010 and Beyond" program.

Lisa P. Jackson, Administrator of the United States Environment Protection Agency (USEPA), on December 7, 2009 announced to the world that greenhouse gases (GHGs) threaten the public health and welfare of the American people, and therefore, can be considered an air pollutant under the US’s Clean Air Act. The US is now the first country in the world to call GHGs air pollutants.