Dr Daniel Buss is the head of the climate change and environmental determinants of health unit at the Pan American Health Organization (PAHO) – the Regional office of the World Health Organization (WHO) for the Region of the Americas – based in Washington DC. He is a biologist, with a master’s degree in Ecology and a PhD in Public Health. Prior to joining PAHO/WHO, he worked as a researcher and in supporting policy-making in Latin America on public health, citizen-science programs, and biodiversity and health in the Amazonian Region.