Peter Alexander Singer, OC, FRSC, is Special Advisor to the Director General of the World Health Organization. He is also Adjunct Professor of Medicine at University of Toronto. From 2008-2018 Singer was Chief Executive Officer of Grand Challenges Canada and Director of the Sandra Rotman Centre, University Health Network. From 1996-2006 Singer was Director of the University of Toronto Joint Centre for Bioethics. He co-authored, along with Abdallah Daar, The Grandest Challenge: Taking Life-Saving Science from Lab to Village.