It's official. China is now the world's top emitter of greenhouse gases. Having spent much of this spring reporting in China, I'd like to second just about everything David said yesterday on the topic. But I have one ginormous point to add. It's not just money that's needed. Yes, it'd be a good thing if Hill folks stopped bashing technology-exchange programs as lending an 'unfair competitive advantage.' And yes, let's stop painting China as the international ...