Most European countries now have too many 3G operators for all of them to be profitable: Denmark, for example, has four players and 3.8m mobile users, while Switzerland has four licence-holders for its 5.3m users.

ECONOMIST: More mobile trouble | The

Denmark, for example, number four on the list of worst polluters, has pledged to double the nation's windpower and to wean itself off fossil fuels by 2050.

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For example, regulators of pension funds in Sweden and Denmark have recently tweaked the rules in a way that has translated into some easing of demand for German bonds.

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But even less controversial topics must be adapted to local medical practice, according to Mikael Vissing, the firm's chief executive: lyme disease, for example, is treated with different drugs in Britain, Denmark and Germany.

ECONOMIST: E-health

Take the example of Denmark's capital, Copenhagen, where for the last two decades the city authorities have been investing in measures to encourage cycling.

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