However the chips finally fall, the viability of the Paris Agreement will critically depend on its ambition mechanisms. The need for this is agreed. Unfortunately, agreement in principle is not enough. To stay below the 1.5°C limit, at least two additional and very specific things will be needed. The first is equity assessment of individual national pledges. The second is a post-Paris, pre-2020 ‘political moment’ in which the Parties can finish building out the core mechanisms of the Paris Agreement. Such a political moment is almost in the cards, though a few words need to be added to the facilitative … Continue reading [and equity].