Elizabeth Mendes from Gallup Poll reports that Americans' wellbeing score climbed to 67.0 in April, the highest level so far in 2010 and tying the all-time high scores found in August 2009 and February 2008 for this measure initiated in January 2008. The April Well-Being Index score is an improvement from the 65.8 in April 2009 and the 66.7 in April 2008.