The latest United Nations climate talks held in Poland in December produced surprising progress toward developing the rulebook governing the Paris climate agreement. International negotiators added teeth to the accord by crafting a detailed system to catalogue national emissions, requiring new benchmarks for measuring and forecasting emissions, and mandating public multilateral and technical assessments. Nations will now have to uniformly track their emissions progress and expectations, with scrutiny from other governments and independent experts. But the next obstacle to climate action will be harder to overcome. There is no existing international financial institution capable of mobilizing enough money to finance […]