Exports, Imports, and Pollution

I read this article last week. I felt it went along with some of the previous readings, especially chapter 12 in Vig. If critical climate changes are the result of human behavior, exports and imports definitely have to contribute. The article makes an interesting in point in that those developed nations (some with lower per-capita emissions) that benefit from goods made elsewhere should accept some of the responsibility for the clean-up of the emissions produced from those goods. I agree with this statement. The economies of developed nations, like the United States and those in the EU, benefit from goods produced in China. All the while, China's carbon footprint surpasses all others. Both Vig and the article reference China as the world's leading CO2 emitter. If reducing emissions in developed countries raises CO2 emissions in developing nations, are we doing anything to help the climate? And if wealthy developed nations are contributing to the CO2 emissions in developing nations, should they be obligated to help clean-up those countries? Those are the two questions in the article that stood out to me. Thoughts?