We need to burn fewer and fewer fossil fuels to keep greenhouse gas emissions low and ensure the 1.5 degrees Celsius threshold isn't breached. But can we manage and reduce something that we didn't measure accurately in the first place? National governments signed the Paris agreement to limit global warming and cut emissions, but the data on fossil fuels—how much there is, how much was burned, and how much of it is in reserve—all of that information comes from... fossil fuel companies. In this episode, Madhuri Karak speaks with Johnny West, an architect of the Global Registry of Fossil Fuels, who is trying to change that.