An ambitious Australian TV show is proving that happiness can not only be measured, it can easily - and permanently - be improved. Now it hopes to do the same to the rest of the country. Liz Hall discovers how If you type "happiness" into a Google search, almost 72 million results come up. And in the past 12 years more than 4,200 academic articles on happiness have been cited on psychology database, PsycINFO. The pursuit of happiness is clearly something that interests us all. It's one of the reasons last November's Australian TV show Making Australia Happy, its...