This talk was given at a local TEDx event, produced independently of the TED Conferences. Data is now everywhere. The ‘internet era’ has now passed and we are entering the era of data. Data use and misuse can lead to both powerful positive change or disaster. Here I discuss the questions we should ask about data and present three case studies where organisations have generated controversy from their data practices. I finish by touching on what we can do to take ownership of our data.

Justin is a freelance data scientist who has worked in academia, technology, healthcare and most recently digital media with the Guardian. He is passionate about all things data and understanding how its use and misuse shapes the world we live in and how this affects our relationships with organisations and each other.

About TEDx, x = independently organized event In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)