Professor Howden is a globally recognised scientist, whose work addresses comprehensively both climate change issues and their translation into real-world impact. His research covers the spectrum of the underlying science of climate change and variability, the impact of these and adaptation responses, emission inventory methods and sustainable emission-reduction options as well as methods and ethics of research translation. This breadth of expertise allows him to provide integrative science and solutions that have had broad policy and practice impact. Professor Howden’s pre-eminence in the field has resulted in an unsurpassed record of being selected for 28 significant IPCC (Intergovernmental Panel on Climate Change) roles since 1991.