Guardian: As this years UN climate change conference opens in Lima, Peru, a series of unexpected political developments in recent months has created a mood of surprising optimism. But dark clouds remain.
First came the UN Climate Summit in September, and the huge public mobilisation which accompanied it. With nearly 400,000 people marching on the streets of New York, and hundreds of thousands more in cities around the world, the assembled leaders were warned that climate change was no longer an issue they...