A new data collection tool is being heralded as the first “mood ring” of the social media world. The “twittersphere” has become the home for millions and millions of micro-stories - fleeting tales of everyday life broadcast to the masses. Now, researchers at the University of Vermont are looking to extract a social pulse from Twitter’s vast output. Millions of tweets have been processed through UVM’s Hedonometer, which measures collective levels of happiness over space and time. Here to discuss the project - and the newly launched website, is Chris Danforth, associate professor at the University of Vermont’s Department of Mathematics and Statistics and one of the developers behind the Hedonometer.