Ten years have passed since December 1997, when the United Nations Framework Convention on Climate Change (UNFCCC) was signed in Kyoto. It's been a decade of tough international negotiations, leading to the beginnings of an international CO2 emissions trading market, whose future past 2012 remains uncertain. The December negotiations in Bali may not have produced a successor to the Kyoto Protocol, but they did get all parties to the Convention to sign an agreement in principle to post-Kyoto negotiations.