Britain's High Court is ordering the government to review its proposal to expand London's Heathrow airport by building a third runway.
In the long-awaited ruling from the High Court, Judge Robert Carnwath says the government's plan is "untenable" because it's based on outdated environmental requirements.
Carnwath stops short of ruling the plan unlawful. Instead, he invites the government to hold further consultation on its plans with a particular focus on the effects on climate change policy and surface access to the airport.
Friday's ruling is a temporary victory for environmental campaigners, as it will likely delay the government's plans to increase services at Heathrow, Europe's busiest airport.