Data-driven journalism can be considered as journalism’s response to the datafication of society. To better understand the key components and development of this still young and fast evolving genre, we investigate what the field itself defines as its ‘gold-standard’: projects that were nominated for the Data Journalism Awards from 2013 to 2016 (n = 225). Using a content analysis, we examine, among other aspects, the data sources and types, visualisations, interactive features, topics and producers. Our results demonstrate, for instance, only a few consistent developments over the years and a predominance of political pieces, of projects by newspapers and by investigative journalism organisations, of public data from official institutions as well as a glut of simple visualisations, which in sum echoes a range of general tendencies in data journalism. On the basis of our findings, we evaluate data-driven journalism’s potential for improvement with regard to journalism’s societal functions.

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Various scholars underscore the importance of public engagement with climate change to successfully respond to the challenges of global warming. However, although online media provide various new opportunities to actively engage in climate discourse through sharing, evaluating or publishing climate-related content online, so far very little is known about the drivers of public participation in climate discourse online. Against this background this study tested a theoretical model on the effects of media and interpersonal communication on participation in climate discourse online using data from a representative online survey of German citizens (n=1,392) carried out while the climate summit in Paris 2015. Over all, the results show that receiving information on climate change from social media (social networks, Twitter, blogs), active information seeking online, and interpersonal conversations about COP21 strongly encourage participation in climate discourse online. Moreover, results provide relevant insights on the role of interest in climate politics, personal issue relevance and climate scepticism as preconditions of communication effects.

A basic understanding of climate politics is necessary for citizens to assess their government’s policies. Media use is supposed to enable learning, while widening knowledge gaps. We analyze whether such a gap opened up in times of intense media coverage during the 2015 climate conference in Paris and explain learning through hierarchical regression analyses, drawing on a 3-month panel survey ( n = 1121) in Germany. We find a diminishing knowledge gap: people with low previous knowledge catch up on the better informed, but overall knowledge remained low and learning was limited. This suggests a ceiling effect: possibly journalistic media did not provide enough new information for the well-informed. Closing knowledge gaps may also be explained by the media system with public television and regional newspapers reaching broad segments of the population. Higher knowledge was predicted less by media use than by education, concern, and being male.

Editing this book would not have been possible without the continuous support from a number of people whom we thank very much. Obviously, the volume would be nothing without the chapter authors' willingness to condense bigger research projects into book chapters and going through several rounds of revisions. We also acknowledge the great support of our student assistant, Joana Kollert, in putting this book together. Thank you to the anonymous reviewers of the individual chapters and overall book concept, and to our colleague in Hamburg, Michael Schnegg, who has provided valuable feedback on the introduction. Kelley Friel has provided support in copy-editing the chapters into better English. We are indebted to Sven Engesser who has taken up the responsibility for this book among the editors of the Global Communications Book Series. Also, we thank Alessandra Tosi from Open Book Publishers who has supported the book and the book series over the years, and who never lost patience with us as the project proceeded slower than expected.