Additionally, the chance of a random search term correlating with the ILInet data in all ten regions is considerably less than the chance that a random search term can correlate with the data for single location.

FORBES: How Accurate Is Google Flu Trends?

The policy also makes it clear that the party has a long term vision for a new hub airport - if an appropriate location can be found - but without an increase in runways or total airport capacity.

BBC: Cambridge MP calls on Lib Dems to oppose new runways

But that, they argue, implies a mistaken reliance on factors such as natural resources, cheap wages or geographic location, and will not provide the basis for long-term prosperity.

ECONOMIST: Fish out of water