A big thank you to the JALT(Japan Association for Language Teaching) Environmental Committee , Jennie Roloff Rothman (chair), Mark Brierley and Brent Simmonds for putting together this detailed and fascinating report on how they set about calculating the various aspects of conference organisation that contribute to the global carbon footprint of their national event in November 2019. A must-read for anyone looking to do the same with their event, ELT or otherwise.