The ICAP Status Report 2017 provides an overview of emissions trading worldwide. The report covers the current status of emissions trading systems in various countries, including the European Union, California, New Zealand, and China. It also highlights the challenges and opportunities facing emissions trading, such as the need for more robust and transparent systems, and the potential for emissions trading to play a larger role in addressing climate change. The report is a valuable resource for policymakers, researchers, and practitioners interested in emissions trading and its potential to reduce greenhouse gas emissions.