Don't need to. You yourself have agreed that CO2 is a GHG. What's so hard to understand about, if you have more of it, you'll get more trapped energy? More energy, more heat. I don't care if it can be proven that temps have gone up at all. BY YOUR OWN ADMISSION, if we keep pumping it into the atmosphere, additional warming is inevitable.
The problem with this statement is that it assumes that there will be no other factors which might slow or eliminate warming.
Thus far, what we have seen is mostly positive feedbacks from the AGW.
We already know that CO2 is a GHG.
Neat, and then deny it does what a GHG does in the next sentence.
The problem is that there are politicians who are trying to tax the air and control the economy because of a theory.
I see. So when we tax someone for putting sulphates into the air, we are taxing the air? Gee Whiz, and all this time I thought we were taxing the polluter. In what bank does the air keep it's funds?
I see, so let's just trust you people, after all, you brought us that lovely little economic burp at the end of 2008. We obviously need a few more of those.
For this reason, causation is important to isolate.
Golly gee whiz, just like cigarettes. You can't really prove that they are bad for you, after Uncle Bubbie smoked all his life and lived to be 90.
When you have no science on your side, do your best to create a climate of doubt.
Other things we know for certain about CO2 is that it reaches its peak at the moment that an Ice Age starts. This is not a causation, but, while the high CO2 probably does not cause cooling, it certainly does not stop the onset of the cold.
As stated previously, unlike the other liars on this board, you have a real classy and slippery logic. Of course, your assumption is that the yokels have no knowledge of the Milankovic Cycles and how they operate. And it is a reasonably safe assumption.
There are other climate driving factors that overpower CO2.
Your proof of which is? Here is a real scientist that states differantly;
A23A
Higher CO2, then, does not mean that additional warming is inevitable. It only means that there is higher CO2.
Of course the fact that the major scientific societies all disagree with you just means that they are not as smart as you, correct?
http://portal.acs.org/portal/fileFetch/C/WPCP_011538/pdf/WPCP_011538.pdf
ACS POSITION
Careful and comprehensive scientific
assessments have clearly demonstrated that the Earths climate system is changing rapidly in response to growing atmospheric burdens of greenhouse gases and absorbing aerosol particles (IPCC, 2007). There is very
little room for doubt that observed climate trends are due to human activities. The threats are serious and action is urgently needed to mitigate the risks of climate change.
The reality of global warming, its current serious and
potentially disastrous impacts on Earth system properties, and the key role emissions from human activities play in driving these phenomena have been recognized by earlier versions of this ACS policy statement (ACS, 2004), by other major scientific societies, including the American Geophysical Union (AGU, 2003), the American Meteorological Society (AMS, 2007) and the American Association for the Advancement of Science (AAAS, 2007), and by the U. S. National Academies and ten other leading national academies of science (NA, 2005). This statement reviews key global climate change impacts and recommends actions required to mitigate or adapt to currently
anticipated consequences.
CLIMATE CHANGE IMPACTS
The effects of projected unmitigated climate change on key Earth system components, ecological systems and human society over the next fifty years
will be profound and, quite
possibly, irreversible (IPCC, 2007). Higher surface temperatures
will severely impact many land-based life forms, damaging vulnerable ecosystems and endangering key plant and animal species. Sea level is rising and the ocean is acidifying; the first threatens coastal habitations and ecosystems, the second
will have profound effects on marine ecosystems. Snowfall and snowmelt patterns are
changing and rainfall patterns
may also be unstable, threatening fresh water supplies in vulnerable regions. Increases in severe weather events are very
likely, with increasing damage due to floods, drought, and heat waves. We are, in effect, in the midst of a vast experiment with the Earths climatewith
uncertain, but
likely quite unpleasant, outcomes.