Interesting findings -
Inglehart's team was surprised that happiness "rose substantially." They speculate reasons for the sunny outlooks include societal shifts in recent decades: Low-income countries such as India and China have experienced unprecedented rates of economic growth; dozens of medium-income countries have democratized; and there has been a sharp rise of gender equality and tolerance of ethnic minorities and gays and lesbians in developed societies.
U.S. is ranked 16th out of 52. Cheer up Baby Boomers!
A survey released last week found one reason America doesn't top the list: Baby Boomers are generally miserable compared to other generations. Further, a public opinion poll released by the Pew Research Center in April found that 81 percent of Americans say they believe the country is on the "wrong track." The response is the most negative in the 25 years pollsters have asked the question.
Study: World Gets Happier - Yahoo! News (broken link)