So, you religiously turn off unnecessary lights, swapped the car for a bike and gave up flying years ago. The bad news? Thanks to China, it's all been a waste of time.
You could be forgiven for thinking that if you listen to Fatih Birol, chief economist of the International Energy Agency, the Paris-based organisation that advises Britain and other wealthy nations on energy matters.
Cyclists seen through smog hanging over Beijing's Tiananmen Square. Photograph: Greg Baker/AP
China could become the biggest emitter of greenhouse gases in the world as early as later this year, he told Guardian Unlimited today.
And if it continues current rates of economic growth and refuses to curb emissions, within 25 years China will produce more greenhouse gases than the entire OECD, the club of industrialised countries encompassing the US, EU, Japan and a clutch of other countries, he warned.
For good measure, by the same time, India could produce half the OECD's emissions, also helping to render any green efforts in Britain and elsewhere effectively useless.
What's an environmentally conscious person to do, then? Keep on cycling and recycling in the hope the emerging Asian economic behemoths will change their ways? Or just give up, buy a 4x4 and move to the north of Scotland?
