Other companies, such as Neurogen, Aventis and Neurocrine Biosciences, are in early tests of drugs that block a damaging stress hormone often elevated in depressed patients.

FORBES: Think Happy

For another, the strategy of UK ministers is to highlight uncertainty, not to seem to be suggesting that they are placing any block in the path of a decision which, they repeatedly stress, is one for Scotland to take.

BBC: Scottish independence: Political battle over currency