Fix the EU Emissions Trading System, And Carbon Markets Can Be Serious Business

What do the following have in common: New Zealand, South Korea, Switzerland, Kazakhstan, Quebec, Alberta, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island, Vermont, California, Beijing, Guangdong, Hubei, Shanghai, Shenzhen, Chongqing, Tianjin, Tokyo, Kyoto, Saitama and 28 countries in Europe?