The Times.
...........A NEW runway at Heathrow is a more likely prospect after a government study found the air pollution problem around the airport was less serious than had been feared and could be overcome.....
Lord Soley, chairman of Future Heathrow, which campaigns for the airport’s expansion, said that the main source of nitrogen dioxide around the airport was from cars on the M4 and the airport’s access roads. A previous government study considered building a roof over a four-mile stretch of the M4 and installing vents to filter out nitrogen dioxide. Lord Soley said that emissions could also be reduced near the airport by moving most of its 40,000 parking spaces to derelict land north of the M4 beside the M25. A new monorail line would link the new car park to the terminals.
John Stewart, chairman of ClearSkies, which represents people living under Heathrow’s flight paths, said: “It looks like the third runway will pass the air pollution test but there will still be the problem of a new flight path blighting 150,000 residents.” ...........