Thursday, Jan. 18, 2007 | The Kojo Nnamdi Show

Worldwide, more than $160 billion dollars flows across borders every year as communities wire money home to family and friends. These large sums have a profound economic and cultural impact in developing countries. Kojo looks at where the...

You know happiness when you feel it -- but do you know what causes it, or how your happiness compares to that of friends and neighbors? We look at the study of what researchers call "subjective well-being" and the latest theories on what...