In announcement that was surprising for it's timing, rather than outcome, China has become the world's number one emitter of greenhouse gases. Experts believed that this would not occur until next year at the earliest, but unprecedented economic growth and their reliance on coal power has catapulted China ahead of the US far earlier than expected.

The analysis was done by the Netherlands Environmental Assessment Agency.

In addition to being bad news all-round, the announcement punctuates an opinion expressed here earlier in June. Namely, that in the face of US obstructionism, it's critical for the world community to stop harping on about American involvement in international talks. The key nations are China and India. They represent the world's number one and two populations and will soon be the world's number one and number two greenhouse gas emitters. If you bring them into a productive solution now, market forces will force the US to follow in the coming decades. Dither away time on the US and the growing carbon footprint of these emerging Asian superpowers will squash international efforts underfoot.