The Annual Review of Public Health, in publication since 1980, covers significant developments in the field of public health, including key developments and issues in epidemiology and biostatistics, environmental and occupational health, social environment and behavior, health services, and public health practice and policy. Volumes 38 (2017) and 39 (2018) are available open access under a Creative Commons Attribution (CC BY) license, and previous volumes (1980-2016) are also free to read. Support for this initiative to increase openness and transparency in research is provided by the Robert Wood Johnson Foundation.