We have to tackle the problem from two sides here. Whether or not you agree that we play a part in global warming, you cannot deny the fact that our CO2 emissions are not the primary reason for things such as Acid Rain which also contributes in the decay of many historical and cultural buildings, as well as nature itself.
You're stating that apart from nuclear power, Hydrogen Powerplants and Windmills would be ineffective? It leads me to believe you haven't thought this through very well.
If, whatever country we are talking about, decides to adapt an approach whereby the entire country were to be powered by renewable resources, the following would happen:
1. Oil / Coal / Gas consumption would decrease enormously.
2. The money previously spent on purchasing the fossile fuels required to generate electricity can be used to build and expand on facilities that create renewable resources.
3. It would provide huge employment opportunities and economical benefit.
4. Any excess electricity that is generated could be sold to countries abroad (as is done now) but because the generation of renewable energy costs next to nothing, this electricity could be sold for 70% of the amount it would cost to generate or pucrhase this electricity otherwise.
5. Profits obtained from selling energy to foreign countries could be used to invest in re-forestation programmes to help cut down the presence of CO2 in our atmosphere.
Result: Problem Solved.
Why aren't we doing this?
1. The Oil tycoons won't be happy
2. There is no political will to get this done
3. Governments never stamp out long-term policies and never make a significant move, backing, or investment into anything new - they always take little steps, little, and slowly, which sometimes, isn't good enough.
1. We would combat problems of Acid rain
2. We would at least prevent the problem from getting worse.
3. A noteworthy investment into this approach would lead to a noteworthy result.