Discussing the health impacts of climate change is a critical approach for furthering medicine’s mission—to improve health and accelerate equity. Health professionals are increasingly learning how climate change is harming their patients’ health. And, unsurprisingly, most respondents to a 2020 multinational survey felt a responsibility to educate the public and policy makers. In most nations “left” or “right” political ideology is a weak predictor of support for climate taxes or laws. Health professionals can contribute to collective action by reflecting and building on the existing consensus on climate change.