Through his experience as a coordinating author of the 6th IPCC report, Gerhard Krinner dives into the internal mechanisms at play behind IPCC reports. First, he presents the slow historical evolution of the IPCC’s work towards demonstrating with certainty humanity's responsibility in climate change. Then, he discusses the obstacles that prevent this science from fully reaching society and policymakers - the most important one being the opaque state interests embedded within IPCC processes.