ABSTRACT
The Intergovernmental Panel on Climate Change (IPCC) is one of the most complex intergovernmental expert organizations of our times, bringing together scientific and technical experts and government representatives to agree on the state of the knowledge on climate change, its impact and solutions. It draws its authority not only from the quality of its assessment reports, but crucially also from the processes that seek to aggregate the collective intelligence of researchers, government representatives, and, to a lesser extent, observer organizations. As this case illustrates, these processes, however, are not without limits.
