The Centre for Science and Technology at Leiden University recently released its annual ranking of universities’ scientific performance. The Leiden Ranking focuses heavily on scientific collaboration and citation impact; this year, it factors in new impact indicators based on counting publications that belong to the top 1% or top 50% of their field. The University of Toronto was the top Canadian school in the size-independent ranking at 86th. UBC was 107th, the University of Victoria 116th, and McGill University 149th. McMaster University [CIEC Academic Member] rounded out the Canadian top five at 165th. 27 Canadian institutions in total appear on the list of 750 institutions, down from 28 last year. MIT placed first overall in the size-independent ranking, followed by Harvard and Stanford.