This hasn't been the best of years for those of us who worry about climate change. The US administration has firmly turned against emissions controls. State backing for construction pushed China's emissions higher. And, far from peaking or even stagnating, worldwide emissions actually increased at the fastest rate in the past seven years, according to the Global Carbon Project. The longer term prospects don't look great, either, with the developing world -- led by China and India -- still firmly addicted to coal. However, I'm holding on to one piece of good news that's emerged in the past week: It