As team leader and writer for the International Institute for Sustainable Development’s Earth Negotiations Bulletin, Cleo has tracked the High-Level Political Forum on Sustainable Development, the UN Environment Assembly, the Montreal Protocol, and the UN Forum on Forests, among other processes.

She is also a regular contributor to Environmental Policy and Law journal’s coverage of UN negotiations, and has engaged in sustainable development advocacy as a consultant for UN Environment in Brussels.

Cleo has lived, worked or studied in the Netherlands, Zimbabwe, Thailand, Canada, the UK, and Belgium. She holds a B.A. in International Relations and Law from Amsterdam University College and an LL.M in Global Environment and Climate Law from the University of Edinburgh. She is in the process of completing a postgraduate certificate in International Development and Africa.