(taj, they did compare with previous century la...).
ha ha ha are you sure? than better be careful, the (illegal) aliens are migrating here, on earth...! -- no matter what happens we have to stay here on earth. what we have to do is to survive.
green alien is telling us something..!!
Agence France-Presse - 7/9/2008 10:35 PM GMT
The world is becoming a happier place: study
The world is becoming a happier place, a study published in this month's Perspectives of Psychological Science shows.
Data from national surveys conducted between 1981 and 2006, which were collated by researchers at the University of Michigan Institute for Social Research, showed that happiness was on the rise in 40 out of 52 countries.
And in a separate happiness ranking, which looked at 97 countries representing 90 percent of the world's population, only 20 countries were listed as unhappy.
more details read here.