The government has given the go-ahead to a third runway at Heathrow, but this doesn't mean the building of the runway is set to take place immediately.
It is just the latest chapter in a saga which has gone on for almost 50 years - ever since the Roskill Commission was set up to look at a third airport for London in 1968.
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So what happens now?
While the government has decided on its preferred option - Heathrow - there will now be a statutory public consultation process before a final decision is made and put to MPs next year.
If all goes to plan, the planning process should be over by 2020 - which is a big if, given the scale of opposition.