In 2009, Courtney read in the Lancet that climate change is the greatest global health threat while serving as an ER doctor in Inuvik, Canada, which is already 3 deg C warmer than it was at baseline. Emergency reflexes kicked in. She has since worked with MSF resuscitating malnourished children, researched menstrual cups and wildfires, and led policy and advocacy regarding ecoanxiety, active transport, divestment, carbon pricing, resource extraction and the phasing out of coal. Courtney was Policy Director for the Lancet Countdown on Health and Climate Change, and sat on the WHO Civil Society Working Group on Climate Change and Health, the Planetary Health Alliance Steering Committee, and the Lancet Planetary Health's Editorial Advisory Board. ER work through COVID-19, ecocentric Indigenous traditions, and ecological economics inspire Courtney's work towards an economy centered around wellbeing. She is excited for new tools and partnerships.