What is data journalism? What potential does it have? What are its limits? Where does it come from? In this section we look at what data journalism is and what it might mean for news organizations. Paul Bradshaw (Birmingham City University) and Mirko Lorenz (Deutsche Welle) say a bit about what is distinctive about data journalism. Leading data journalists tell us why they think it is important and what their favourite examples are. Finally Liliana Bounegru (European Journalism Centre) puts data journalism into its broader historical context.