Finland has a lot to celebrate. Not only does it have a capital city bursting with gastronomic creativity, the spectacular Northern Lights and Santa Claus's year-round home (plus the reindeer support staff) in Lapland. It's also the happiest country in the world for the second year in a row, according to the latest World Happiness Report. It's followed by Denmark, Norway, Iceland and The Netherlands. The World Happiness Report was released by the Sustainable Development Solutions Network for the United Nations on March 20, the United Nations has declared to be International Day of Happiness. The report ranks countries on...