I was working in Zambia when word came that the United States would pull out of the international Paris Agreement on climate change. Listening to this news with a group of Zambian colleagues, I was saddened. In Zambia, and nearly everywhere we work around the world, climate change is treated as a life or death matter. The prospect of intensely prolonged droughts and water shortages, chronic food insecurity, power outages, coastal land loss under rising seas, and extremely violent storms doesn’t bode well for poor countries like Zambia that lack the resources to adapt to these daunting challenges. These countries have contributed little to global warming but face the brunt of its impacts.