Don't be worried about CO2 emissions. I don't think you quite realize the scale of the Global Warming Hoax - the idea that CO2 causes high temperatures is nonsense. The Vostok ice-core data shows that it is exactly the other way round.
High co2 levels are actually good for the planet, the more vigorous plant growth increases the production of oxygen, as well as absorbtion of other man made pollutants, negating any enviromental impact human activity may cause, but more importantly, absorbing the much more deadly pollutants "mother earth' dischages from time to time through volcanic eruptions.
Just ONE single volcanic erruption can spew more pollutants, sulfer dioxide, etc than 100 years of human industrial activity in just a few hours.
I am well aware of the hysteria. I actually favor a less carbon based energy system, primarily for national security reasons.