air quality

Decision to delay tighter smog rules branded "illegal and irresponsible"

UK particulate filter manufacturer also reveals it is developing lower-cost NOX filter

Ministers bow to pressure in agreeing to monitor tiny yet dangerous PM2.5 particles and combat pollution, local media reports

Country's enormous coal power sector must reduce noxious gas output from January 2012 as spending on carbon capture increases

Government says poor performance of European standards for cars will make it too difficult to achieve nationwide compliance with NO2 air quality limits

Judge rules case must be heard before the end of the year to determine whether government has failed to protect people from air pollution

Administrator Lisa Jackson admits the agency will miss target to float new utility-focused proposals by end of September

Capital's policies to improve air quality an "embarrassment" in run-up to 2012 Olympic Games

Surprise announcement confirms tightening of US smog rules will have to wait until 2013