Tipping Point (3/5): License to pollute - Carbon markets and the new economy of nature Podcast-Episode We start to count as little kids. First our fingers, then our toys, and finally more grown-up things – calories, money, trophies. As a society, we now count our wealth and the CO2 that we emit. If you can quantify something by counting it, you can turn it into a market – right? That’s what countries around the world have tried by setting up emission trading systems.