If you haven’t read it already, make sure you visit good old Grist sometime to read an interesting piece on what all these government measures to fight global warming will actually cost.

As serious governments shift the climate-change debate from whether the phenomenon exists to the best means to combat it, one of the first things officials want to know is how much economic damage it will cause — and how much measures to fight it might cost. It is the trillion-dollar question, and figures are flying everywhere. But what do these numbers really mean? And how can people who space out at the sight of so many zeroes make any sense of them?