A new study of the progress made over the last 25 years in documenting and revitalizing endangered languages shows both significant advances and critical shortfalls. The article, “Language documentation twenty-five years on”, by Frank Seifart (CNRS & Université de Lyon, University of Amsterdam, and University of Cologne), Nicholas Evans (ARC Centre of Excellence for the Dynamics of Language, The Australian National University), Harald Hammarström (Uppsala University and Max Planck Institute for the Science of Human History) and Stephen C. Levinson (Max Planck Institute for Psycholinguistics), will be published in the December, 2018 issue of the scholarly journal Language.