Associated Press: Don’t expect the congestion in the skies above Heathrow Airport to magically clear up anytime soon. The British government on Thursday approved the construction of a controversial third runway for Heathrow — Europe’s busiest airport — but that doesn’t mean it will be built in the next year or two. Transport Secretary Geoff Hoon told Parliament the new runway and a new passenger terminal should be ready between 2015 and 2020. But that optimistic timetable may be delayed if a …