Umm. Anatta is not wrong to point out that there is a conflict between what climate researchers are telling us about climate change, and their tendency to fly around the world to conferences etc.
And some of them (but not many, yet) have sworn off flying. Others try to use Skype etc to participate via internet whenever possible.
Nor is it limited to the researchers. In Bill McKibben's last book, he admitted that he was starting to feel guilty about doing so much traveling, given the GHG emissions involved. He justified it in terms of his climate activism, and he is not wrong about that, either--there is obviously a difference between flying several thousand miles just to lie on a beach, and flying that distance to attend a conference, give a speech, coordinate activist activities (all three of which I think McKibben is doing on a typical trip).
But, we need to begin walking the walk...literally, when shorter distances are involved.....
If getting somewhere quickly is not necessary, it is often possible to travel more slowly and in a much more environmentally responsible fashion. I think that the options for doing so will gradually expand over time.
Oh my, we're having the old "AGW is a hoax - just look at Al Gore's mansion - lol" debate again.
Let's make it a principled one. I'd offer: "Any and all carbon-emitting behavior or lifestyle that, if all did it, would cook the system, is permitted to no one." Fairness, of course, requires no less. With that, Gore is doomed. Interestingly enough, so are we, under the exact same standard, living in the Western world under billowing clouds of smoke, as we do.
Let's in a next step get to what you hinted at in the third paragraph. The principle, loosely formulated, could take the form: "Any and all behavior resulting in carbon emissions in excess of what's allowed by principle 1 may be justified in case it results in overall net carbon emission reductions, or contributes to the cause for such reductions."
I'd say, clumsily put as it is, it looks pretty solid, at least if we may apply a fairly simple utilitarian approach to climate change. With that, Al Gore is probably off the hook, as is McKibben, while we, the carbon hogs, are not. And that is why the finger-pointing during that "AGW is a hoax - just look at Al Gore's mansion - lol" debate is so pathetic. Agreed, of course, even while helping to save the earth, the requirement they reduce their carbon emissions still is valid. Oh, and let's make sure the next G-20 summit is attended by holograms, okay?
Now, we have agreed, years ago, that the rich are always going to enjoy a lifestyle more damaging than the rest, and that's not going to end, like, ever, and that it's egregious in its violation of the fairness principle. Their carbon hogging unjustly imposes on the rest the necessity to save more energy than we otherwise had to, just as their speedy transportation imposes slowness on the rest. All the more important is the imposition of a steadily rising carbon tax to make the biggest carbon hogs pay more, so as to reduce the inevitable unfairness.