Climate change is no longer a distant environmental concern confined to scientific conferences and global summits. It has become a public health emergency unfolding daily across Nigeria, where rising temperatures, devastating floods, prolonged droughts, and worsening air pollution are placing millions of lives at risk. From increasing cases of malaria and cholera to malnutrition, respiratory illnesses and mental health disorders, the country’s changing climate is reshaping the nation’s health landscape in ways that demand urgent action. Ayodeji Ake writes