The Kyoto Protocol's Clean Development Mechanism (CDM) is the first global market mechanism in international environmental law. It has been much lauded for its success. However, doubts whether the CDM governance structure is robust enough to meet the challenges of regulating an international market mechanism in the long term are emerging. The Executive Board (EB)'s decision-making practice is often not predictable and many of its decisions have come as a surprise to project participants and technical project experts. Members of the EB often have multiple responsibilities which result in a complicated situation of conflicting interests. Finally, private sector participants in the CDM who have been aversely affected by EB decisions have no ri...