==> Since the US, China and Australia etc. are not signatories to Kyoto, and countries like my own (Canada) pay mere lip service to the treaty, Kyoto is by definition a failure anyway.
I think you have the cause and effect backwards. The treaty is not a failure because those countries didn't sign it, those countries didn't sign it because the treaty was totally ineffectual with respect to aiding the environment.
==> The USAF interest is related to US "security" needs, to keep the military functioning if the supply of foreign oil is shut off by terrorism or other means.
Sure that's part of it, as it damn well should be. That's their job. But they are also concerned about costs and environmental damage. They're not mutually exclusive goals. Further, as is often the case, military R&D flows into the civilian sector and this will be no exception. A clean-burning aviation fuel is just as clean burning in military jets as it commercial airliners.
==> But in greenhouse gas emissions or fossil fuel use-efficiency terms, they're worse than merely burning the coal in the first place to satisfy a stationary energy need,
Given that aviation is not a stationary energy need, this statement is a complete mis-direction. I will grant that it's a nice sound bite. But the statement is out-of-context and on top of that, very misleading.
The burning of CTL syntroleum produces considerably less greenhouse gases than the burning of conventional oil produced fuels, which is a very real and tangible benefit with respect to portable energy consumption.
That being said, and to be honest, on the flip side, the production of syntroleum does carry a definitely higher CO2 emmision profile then current refining processes. However, since refining is done is confined locations, additional efforts are being made to capture those emissions and not allow them to enter the atmosphere. The net effect is considerably less atmoshperic emissions.
With respect to the captured production emissions, they are in turn fed into biomass production process where the CO2 is combined with algea to produce a biofuel.
Yes, there is a lot more work to be done, but progress is being made on both sides. I can certainly understand why people would like to dismiss these research efforts because the US DOD is so heavily involved. Or the desire to overlook the total civilian benefit because there are definite military uses, but that doesn't change the fact that it is happening and is in my opinion, good for everyone.
You may despise the messenger, but that doesn't invalidate the message.
Further, in FY 2006, the US Department of Energy spent over 450 million dollars in other biomass research, in addition to R&D in geothermal technolgies, photovoltaics, some hydrogen based technologies, and other aspects of the total energy equation.
You can sit back and dismiss what is being done, and continue to believe, "all I've heard is a re-statement of the uncertainty of the issue (which nobody can credibly argue with) and a reluctance to do stuff which will cost us money.", but that's not a very accurate perception of reality.
Good Luck
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As a circle of light increases so does the circumference of darkness around it. - Albert Einstein