Is the climate changing? Yes
Is the climate changing because of human intervention? Maybe
Is an Emision Traiding Scheme a good idea: Hell Yeah!
At the moment, it is hard to determine of humans are to blame for climate change. While the climate scientists are adiment that it is proven science, many of the vocal proponants have taken an absolutist view that have alientated believers like myself.
It can be proven by observations that the weather paterns in my part of Australia are changing. It is getting hotter and dryer. Weather events are becoming extreame.
The science underlining greenhouse gas is also provable by observation. Venius has a high CO2 atmosphere, that traps in solar heat making the world hotter than an earth like atmosphere in the same orbit.
However, the earth has gone through vilont climate change in the past, and there is an argument that we may be overdue to an ice age.
What this has to an Emission Trading Scheme (or ETS). For me, not much. I feel that reducing emissions into the atmosphere is a good idea, just from a moral point.
1. The earth atmosphere is a finely tuned system, and we should not be mucking about with it, because we really dont know what the repercussions are.
2. Most emissions are also polutants, and there is a proven link between health and polution.
3. Oil and coal is a finate resource. Ideally we should be using Oil for a wide range of uses, but we burn it to release its chemically stored energy.
So why an ETS?
Any company that produces waste, has to pay to dispose of it. Governments impose regulations on where it is to be dumped, the way it is to be dumped and the monitoring of enviromental impact of the waste.
Excpet for Gas Waste.
At the moment, gas emissions do not have a cost associated with it. Governments do monitor emissions for some noxious elements. But gas emissions are getting a free ride compared to liquid and solid wastes.
Imposing a value to emissions will ironically give it a value. At the moment, emissions have no value whatsoever. An ETS turns emissions into a comodity. People will invest in ways to store or manage emissions. People will look for ways to reduce emissions. Someone may even work out a way to value add to emissions, and do something with it that is unfeasable today, because it is easier to emit the waste gas rather than look at other options.
And the cost associated with an ETS. Yes there is a cost, however, everyone has been subsidising emissions by not imposing a value to it! It is cheaper and easier to emit waste gasses, even with the possable costs on the health and climate effects. So we pay via health care and energy costs. So no matter which way we go, there is cost associated, even if we ignore the matter entirely
So, even of your a cliate sceptic, concider an ETS.

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