In the global economic race, some countries are seizing the possibilities of the green economy - while others are doubling down on dirty industry in the hope of short-term growth. And those doing the most aren't always the usual suspects. Botswana is putting nature at the heart of policy. Ethiopia is leading the way in planning for a green economy. China is entering a green boom. And Trinidad and Tobago is making sure its banks are ready for climate change. We're tracking up to 50 countries, representing a range of wealth, geography, and culture. We plan to track more.