And what steps have you taken to halve your gasoline consumption since you're so obviously concerned?
I now drive a car which gets twice the gas mileage of my old one. I live in an extremely well-built house which requires very little energy to heat or cool...and I made sure I chose wisely when purchasing a heater. I've cut my driving to an absolute minimum.
And what have you done? Probably nothing.
More to the point, my post was intended to point out the lack of seriousness of the G-7 communique. China was being asked to adopt policies which would benefit G-7 (and us in particular), not itself.