Hoffman pursues research on climate change politics, global governance, multilateral treaty-making, complex systems and international organization. In addition to a number of articles and book chapters, he is the author of Ozone Depletion and Climate Change: Constructing a Global Response (SUNY Press 2005) and coeditor with Alice Ba of Contending Perspectives on Global Governance (Routledge 2005). His most recent book is Climate Governance at the Crossroads: Experimenting with a Global Response after Kyoto (Oxford University Press, 2011). He is also one of multiple co-authors on a 2014 book, Transnational Climate Change Governance (Cambridge University Press).