The Arab ranking will have lower research criteria, with institutions required to publish at least 500 publications over a five-year period (compared with 1,000 publications in the global table). Single-discipline universities and institutions that do not teach will also be eligible for inclusion (in the global ranking, universities are excluded if they do not teach undergraduates or if 80 per cent or more of their research output is exclusively in one of our 11 subject areas). These differences will allow more universities to participate in the Arab ranking. The new regional table will also introduce metrics that are specific to the missions of universities across the Arab world. This includes reflecting the important work being undertaken on sustainability as demonstrated by our