Dr Diarmid Campbell-Lendrum is the Head of the climate change and health unit at WHO Headquarters. He has worked on the issue for over 20 years, playing key roles in the first quantitative estimates of global health impacts of climate change, resolutions of the World Health Assembly, WHO global conferences, and the expansion of WHO’s climate change and health support to over 30 low and middle income countries. Diarmid is author of over 100 journal papers, reports, and book chapters, a lead author on three Intergovernmental Panel on Climate Change (IPCC) reports, and of the first health report to the UN Climate Negotiations. A keen cyclist, he rode from Geneva to Paris for WHO’s 2nd Global Conference on Health and Climate Change in 2016, and in 2021 - from Geneva to London to hand over the “COP26 Special Report – The Health Argument for Climate Action” to a group of pediatricians cycling to Glasgow.