Challenging linguistic concepts—in dialogue with ELF researchers is a three-and-a-half-hour online workshop held at the 46th Austrian Linguistics Conference (9-12 December). The workshop is concerned with challenges and controversies in the study of ELF communication. For more information and a detailed program, visit the ÖLT 2021 website. Click here to register for the conference. You will then receive the link to the online meeting space (Zoom) a few days before the actual workshop.