“OurWorldInData is an online publication that shows how living conditions around the world are changing. It communicates this empirical knowledge through interactive data visualisations (charts and maps) and by presenting the research findings on global development that explain what drives the changes that we see and what the consequences of these changes are. The publication is developed at the University of Oxford and covers a wide range of topics across many academic disciplines: Trends in health, food provision, the growth and distribution of incomes, violence, rights, wars, culture, energy use, education, and environmental changes are empirically analysed and visualised in this web publication. For each topic the quality of the data is discussed and, by pointing the visitor to the sources, this website is also a database of databases. Covering all of these aspects in one resource makes it possible to understand how the observed long-run trends are interlinked and the research on global development is presented to the audience of interested readers, journalists, academics, and policy people. The articles cross-reference each other to make it possible for the reader to learn about the drivers of the observed long-run trends. For each topic the quality of the data will be discussed and, by pointing the visitor to the sources, this website works as a database of databases – a meta-database. Our World In Data is made available as a public good: The entire publication is freely available, the data published on the website is available for download, the visualizations published in the web publication are made available under a permissive Creative Commons license, and all the tools to publish OurWorldInData and to create the visualizations are free to use by everyone (completely open source and available on GitHub here).”