These days we share so many opinions online, but can all that public information be harnessed to benefit our communities? Two researchers from the University of Melbourne are taking on the data from twitter to plot how people feel about urban green spaces. Their fine-combing reveals fascinating patterns in behaviours and could see changes in the way public planning is conducted. In this episode Kate Murray from the Networked Society Institute is Dr Elham Naghizade, Department of Infrastructure EngineeringKwan Hui Lim, School of Computing and Information Systems to share how they turned city parks into living labs and uncovered how urban design is affecting our moods.Producer: Kate Murray and Andi HorvathAudio engineer: Gavin NebauerEditing: Arch Cutherbertson, Kate Murray and Claudia HooperVoiceover: Chris Hatzis