Well, guess what? Scientists (probably jobless ones with nothing better to do) have come up with a map of World Happiness Levels. It shows all the countries in different colors varying from yellow to red. Red indicates the countries with the happiest people, while yellow indicates one with the least happy people.
Check it out here.
For the purpose of this research, Happiness has been defined as being healthy, wealthy and wise. Wise?! I wonder how the US is marked as a happy country in that case!
Also, the economic powerhouses of Asia (China, India and Japan) are apparently not that happy.