The CO2 levels in the atmosphere has increased by around 30% during the last 150 years or so. And the lion's share of that increase occurred within the last 50 years. Scientific study has proven that the burning of fossil fuels, both by thermal power plants and by automobiles has caused much of that increase.
The only options to save our planet are:
1. Replace thermal energy with nuclear energy
2. Replace gasoline / diesel oil with bio-fuels
3. Prevent the loss of forest, especially in the Amazon Basin, Indonesia and Central Africa
Nuclear energy is great, why else do you think the us govt won't issue new permits for reactors (they only issue permits to add reactors to plants already in existance.
Diesel has it's own problems, even though it is favoured in the UK, biofuel generally uses oil that is not in ready supply for mainstream.
Prevent the loss of forest. OK, look what the US and Canada has done and model that. there is now more forest in N America than ever before (depending on what stats you use)
I still have yet to understand why people are so up in arms about co2 levels... the increase of greenhouse gasses as they are called have a very beneficial use and it is much easier to adapt to it than to resort to giving up all of our freedoms for big government in the hope that getting the environment sorted out doesn't lead to utter catastrophe, which I think is vastly more likely.
Also, the herds of cattle worldwide are probably as much to blame if not more than industry, I certainly don't want to give up having meat in order to hopefully knock down co2 levels a few notches.