Read most any self-help book, and at some point it will advise you to surround yourself with happy people. To which I'd reply: Tell that to my …
What Are the World's Happiest Countries?
A new study has the answer, and also names the least happy nations on earth. Plus a round up of other travel studies, on the planets most powerful passports, on transportation costs in different nations, and on the world's most popular dogs.
Photo: www.frommers.com
Other Travel Studies
