- Climate change mitigation and adaptation policies
- The history of energy transitions
- Political economy since the early 20th century
- Comparative politics, party systems, and democratic institutional design
Ryan is a political scientist researching the design, sequencing, and comparative performance of climate change mitigation policies under varied political regimes and socio-economic circumstances. He is a Postdoctoral Research Fellow with Climate Econometrics, based at Nuffield College, Oxford. He is also a Senior Research Officer with the Institute for New Economic Thinking at the Oxford Martin School, and a part-time consultant with the World Bank working on climate economics, green fiscal policies, and low-carbon technologies.
He received his PhD in the Department of Politics at University of Cambridge, where he remains affiliated with the Cambridge Centre for Environment, Energy and Natural Resource Governance. Previously, he was Deputy Research Director at Climate Leadership Council (Washington DC), Postdoctoral Research Associate at University College London, and an editor at the journals Climate Policy and Cambridge Review of International Affairs.