Marie-Claire Cordonier Segger is Leverhulme Visiting Professor at the University of Cambridge, Full Professor of Law at the University of Waterloo, Canada, and Executive Secretary to the Climate Law and Governance Initiative, a UNFCCC partnership supporting implementation of the Paris Agreement. She serves as Senior Director of the Centre for International Sustainable Development Law (CISDL), Chair of the Future Board for Bit Bio, on the Board of the International Law Association, as a Law Fellow and DoS for Lucy Cavendish College, a founding Fellow of the Centre for Environment, Energy and Natural Resources Governance (CEENRG) and affiliated Fellow of the Lauterpacht Centre for International Law (LCIL) in Cambridge. Author or editor of over twenty books and 120 papers, she edits the Treaty Implementation for Sustainable Development series for Cambridge University Press and serves on the editorial boards of several law journals, also advising countries and international organisation on treaty commitments on climate change, biodiversity, trade, investment and other Sustainable Development Goals.