Continued engagement by the health community is needed to ensure climate action is commensurate with the scale of the threat, argue these authors COP28 took place at the end of 2023 amid unprecedented global challenges, with record high temperatures, widespread wildfires, and destructive floods, all demonstrating the immediate reality of the climate crisis. The health community has been engaging in COPs (international negotiations to reduce greenhouse gas emissions and tackle the effects of climate change) for the past decade, but COP28 was nonetheless a year of health “firsts.”1 It includ...