In 1990, China was responsible for only 10% of annual emissions. But in 2010, it contributed some 27%
In 1992, when the world met to discuss an agreement on climate change, equity was a simple concept: sharing the global commons – the atmosphere in this case – equally among all. It did not provoke much anxiety, for there were no real claimants on the horizon. However, this does not mean the concept was readily accepted.