UN report rates Mumbai, Kolkata as below average

Three big cities — Mumbai, Kolkata and Bangalore — have been rated below average compared to other mega cities in Asia-Pacific in terms of keeping pollution levels in check, said a report of the United Nations Development Programme (UNDP). Delhi is the only Indian city featured in the average category. The Asia-Pacific Human Development Report 2012 titled One Planet to Share: Sustaining Human Progress in a Changing Climate today came out with a green ranking of 22 cities in the Asia-Pacific