Bright Start That Ran out of Gas
View on The Times of India website"In 2010, the Centre for Science and Environment quoted a study by Washington DC-based Resources for the Future on air quality trends in Delhi from 1990 to 2005 to claim that conversion of buses to CNG had helped reduce PM10, CO and SO2 in the capital, while refuting the gas had led to the increase in NO2 levels. Health experts also support this view."