Just this year we’ve seen open data give rise to recreations of Denmark in Minecraft, the ability to compare cities at the same scale and also collections of geo-mapped tweets and traffic lights. But what about a practical application for all of that info, one that has a more tangible benefit to society, like, say, crime prediction? That’s what the University of Trento in Italy had in mind with its “Once Upon a Crime” study. The researchers coupled freely available demographic and mobile phone data with real crime data to forecast where in London an infraction might occur.