The Anthropocene Working Group (AWG) is an interdisciplinary research group dedicated to the investigation of the Anthropocene. It was established in 2009 by the Subcommission on Quaternary Stratigraphy (SQS), a component body of the International Commission on Stratigraphy (ICS), and since then has worked to assess the Anthropocene as a geological time unit. In 2016, the AWG decided by a majority vote that the Anthropocene possesses geological reality, that it is best considered at epoch/series level, that it is best defined beginning in the mid-twentieth century with the “Great Acceleration,” and that it should be defined by a Global Stratotype Section and Point (GSSP). In 2022, the AWG started the voting process on which of twelve research sites represents the most suitable location for a GSSP for the Anthropocene. In summer 2023, the AWG will present the selected candidate site. If the AWG’s selected GSSP candidate successfully passes through three further stages of voting (by the SQS, the ICS, and finally the International Union of Geological Sciences), it will be officially ratified and gain a place on the International Chronostratigraphic Chart. A list of current AWG members—which includes humanists, social scientists, and an international lawyer alongside geologists and stratigraphers—can be found on their webpage.