My opinion on GW is this:
Yes, we are in a warming trend, but, we were just in a cooling trend?
http://en.wikipedia.org/wiki/Little_Ice_Age
Is GW caused by humans?
To some calculated point yes, us humans do contribute to changes.
But, only when we are attempting to do anything about it.
Aka: Cutting down a forest to plant corn, now if we cut down a corn field to plant a forest that would be something we could do to prevent GW as the more trees you have the cleaner the air.
If the whole world stopped driving their cars, operating factories, heating their homes, and stopped any activity that would produce CO2. Would that stop the warming trend? I would highly doubt it as we are now part of a warming cycle and any degree of warming that we are creating is small compared to what nature actually does. One big burp from a volcano and everything we would have done would be a wasted.
If we adopt the Al Gore Carbon Bank model and pay for every unit of carbon we put into the atmosphere would this stop GW? I would highly doubt it as this would push our economy into a depression while making the people in charge of the Carbon Bank richer and more powerful then you can imagine.
Should us as a people demand that the auto manufactures produce more efficient vehicles and products? Yes
Should we as a people demand government stop putting regulations out that though well intended cause inefficiency? Yes
Should we as a people hold corporations and the government officials responsible for their actions that cause pollution and waste? Yes
Should we as a people demand that government through regulations and taxes stop getting in the way of the people that try to create more effecient products? Yes