Have sex to save the country. That's essentially the meaning of the "Do It For Denmark" campaign sponsored by travel company Spies Rejser. One of the ads (seen above) frets that Denmark's birthrate is not looking so hot these days and is at its lowest level in decades. 

Who doesn't love a Danish pastry? And in Denmark, they like their pastries sprinkled with plenty of cinnamon. But now, Denmark's bakers are being told that their time-honored recipe for the beloved kanelsnegle — or cinnamon swirl — may be unhealthy and against the law.

There appears to be nothing rotten in the state of Denmark these days. For the second straight year, Denmark has been named the happiest country, according to a survey of 156 nations called the World Happiness Report. Based on Gallup data collected from 2010-2012, the survey looks at measures like life expectancy, social support, freedom to make life choices, and perceptions of corruption and generosity. Denmark nudged out Norway, Switzerland, the Netherlands and Sweden.