As governments seek to agree on measures which will keep climate change within the 2°C limit, questions arise about the value of fossil fuel reserves remaining in the ground. According to Mark Campanale and the Carbon Tracker Initiative, this ‘unburnable carbon’ will become a stranded asset for many companies if governments proceed seriously in tackling climate change. Mr. Campanale made the argument that investing in fossil fuel companies makes neither economic nor climate sense. He called for a re-evaluation of energy business models based on carbon budgets.