Climate change is undermining the foundations of good health; threatening the food we eat, the air we breathe, and the hospitals and clinics we depend on. However, the response to climate change could be the greatest global health opportunity of the 21st century. The Lancet Countdown: Tracking Progress on Health and Climate Change brings together 35 leading academic institutions and UN agencies from every continent to monitor this transition from threat to opportunity. We track annual indicators of progress, empowering the health profession and supporting policymakers to accelerate their response. In the talk we discuss the application of machine learning and natural language processing to develop and track a set of Lancet Countdown indicators.