This news item is about: In “Operationalising planetary health as a game-changing paradigm: health impact assessments are key” (The Lancet Planetary Health, Volume 2, Number 2, e54-e55) Steven Osofsky and Montira Pongsiri of the College of Veterinary Medicine explain how Health Impact Assessment (HIA) can be the bridge to the planetary health paradigm becoming a go-to tool for improved real-world decision-making at a range of scales.