Dr. Trevor Hancock is public health physician who retired in 2018 from his position as a Professor and Senior Scholar at the School of Public Health and Social Policy, University of Victoria. In the 1980s he helped to create the global healthy cities movement and has been an internationally recognised leader in this area for 40 years, often drawing attention to the links between healthy and sustainable communities. He has been a leader on issues of health and the environment for decades, co-founding the Canadian Association of Physicians for the Environment in 1993 and the Canadian Coalition for Green Health Care in 2000. In 2012 he was asked to lead a Canadian Public Health Association Task Force that produced a comprehensive 2015 report on the ecological determinants of health. In recent years he has focused on the health implications of crossing multiple planetary boundaries and on the need for Canada to become a Wellbeing Society and is currently the Interim Convenor of the Canadian Coalition for Planetary Health and a Wellbeing Society. He has published extensively on these ideas in the academic and professional literature and is frequently in demand as a speaker. He was made an Honourary Fellow in the UK’s Faculty of Public Health in 2015 and in 2017 was awarded the Defries Medal, the CPHA’s highest award, presented for outstanding contributions in the broad field of public health.