The 2019 Human Development Report is the latest in the series of global Human Development Reports published by the United Nations Development Programme (UNDP) since 1990 as independent, analytically and empirically grounded discussions of major development issues, trends and policies. Additional resources related to the 2019 Human Development Report can be found online at http://hdr.undp.org, including digital versions and translations of the Report and the overview in more than 10 languages, an interactive web version of the Report, a set of background papers and think pieces commissioned for the Report, interactive data visualizations and databases of human development indicators, full explanations of the sources and methodologies used in the Report’s composite indices, country profiles and other background materials as well as previous global, regional and national Human Development Reports. Cor-rections and addenda are also available online.The cover conveys the inequalities in human development of a changing world. The dots in different colors represent the com-plex and multidimensional nature of these inequalities. The shad-ow of the climate crisis and sweeping technological change, evoked by the color of the cover background that suggests heat, will shape progress in human development in the 21st century.