Ardent Apple worshipers would like to believe that the Jesus phone can do almost everything and anything under the sun. Well, how about charting your emotional state? Apparently, a bunch of researchers at London School of Economics have created an iPhone app to determine how our happiness levels correlate with the environment. Its operations isn't rocket science. Essentially, all you have to do is to tell the app how you are feeling, and your location and responses are tabbed by means of satellite positioning thereafter. Following that, responses are subsequently linked to environmental data such that researchers are able to determine the impact of the environment on our happiness levels, but only for those living in the UK that is. To find out more, read up on the "Mappiness" app here.