Well the fact of the matter is that the climate has always been changing. The question is how much are we impacting it? Are we impacting it the way they say? If so, so what? What are the implications?
If it is a problem then we look for solutions.
The big problem is the carbon tax is no kind of solution. It is a farce. That is clearly power and politically motivated as it solves nothing and actually gives licenses to the largest offenders to keep on keepin' on. It essentially taxes everyone for breathing, and thus living.
There are a lot of alternative approaches. Like maybe stop deforestation. Plant more types of plants known to process carbon and release oxygen faster.
Yet what they are not telling you is that having too little carbon can lead to issues too.
One thing is certain. The climate will change. (I didn't state in what way, as I don't know)
How much of it is our fault or even under our control is another matter all together.