Guardian: BAA has shelved plans for building a third runway at Heathrow until after the general election, a year after the government controversially approved expanding Britain’s largest airport. BAA secured government approval for its plans a year ago this week amid protest from green groups and local residents. For the last seven years, a loose coalition of Sipson villagers, more seasoned environmental campaigners and celebrities have been battling BAA’s plans to expand northwards. The …