Gan,

the CO2 concentration was relative constant between years 1000 to 1800 with a value of around 280 ppm. Since then it has increased as you stated and is presently around 380.

I think that you are right, the most practical short term method of decreasing fossile fuel consumption is to decrease the world population. The other option is of couse to run out of fossile fuel to burn.

When the person(Al Gore) that probably is one of the 10 top individual polluters in the world, gets the Nobel piece price for his environmental work(hear nothing any longer since the price), then you know how hypocritical things have got. There is so much BS in this because there is money and fame to be had. I personally bike, try to conserve energy, do not have an air conditioner etc, but the hype on global warming I do not buy.

If you look back at the temperature variations over billions of years, the norm has always been large temperature variations. In fact, for about 80% of the time the world has been in ice ages, with intermittent 'warm' periods where life prospered. Yes, we know as a fact that indeed human activity has increased CO2 emissions and the concentration has increased. But in terms of global warming potential of this small amount of CO2 is minimal as compared to the water vapor in the air. I agree with you that lately it appears to have gotten warmer, but is this a natural trend or not?

I agree that indeed we as humans should try to do our best to reduce fossile fuel combustion, a) to conserve for the future and b) to reduce CO2 emissions. However, since we are hooked on cheap energy we will not do that without a fight. What is even more scary is that we indeed depend on it to survive as a society the way we know it. This part really scares me, for my children