And the man making this all possible, literally, the single engine, the piston that's driving this whole operation of making sure that we don't walk away from our cities, we don't walk away from this recovery, we don't -- we take the chances we're taking to generate growth here, is a man who came from a big city himself.

WHITEHOUSE: Talking Jobs with America��s Mayors

Mr Cowan, who was recovering from an operation for thyroid cancer, had gone on the organised walk with a group searching for bats armed with a torch as instructed.

BBC: Hopetoun House

During the week-long exhibition at the Scottish Parliament to celebrate the Scottish contribution to the creation and operation of the Large Hadron Collider visitors are able to walk through a full-size replica of a section of the LHC tunnel.

BBC: Scotland