[On COP 24 U.N. climate negotiations and the Paris "Rulebook"] There’s also the issue of checking up on each country’s measurements. Before the Paris agreement, China was considered a “developing” nation subject to less-stringent reporting requirements. That changed after 2015. What will the reporting requirements be and how will they be verified? That’s what the negotiators will be duking out in Poland. I’m curious to see how far they get.