I would agree that China, India and USA are probably the key countries here ( and to a lesser extent other parts of Asia, Africa and South America). However I c

I would agree that China, India and USA are probably the key countries here ( and to a lesser extent other parts of Asia, Africa and South America). However I can't see China and India doing anything significant here. USA could be leading the change along with parts of Europe, but I agree it will be difficult to do anything without the largest and more developing countries getting on board. I know a lot of climate activists in the UK and while it's a noble goal, the UK is probably contributing less than 0.5% so any change there is fairly insignificant relatively.