Well, the Kyoto trreaty will not work, seeing as America never signed it (and because we are an extension of them
neither did we) and they are the major producer of these problems.
But I recently had to do a whole debate about the topic of the environment, (and faced the difficult side of saying we were doing ok as it was) and of course Kyoto came up, but I had found some interesting research. That, as you sort of mention, the treaty is much more linient on developing countries. Now here in Australia, we are major users of coal and pollution, because we simply haven't had the technology to advance far enough, signing this treaty will seriously cripple us economically.
Now, I'm not sure how much this is the same in America, but Japan however already created a lot less gas, because they were technologically superiour, and as such, this treaty is not as draining on them. For these economic reasons, the treaty would never have convinced key nations.
Anyway, yes, we should try to help the environment. But what we must realise, is that to get the help, we don't want to damage anything, and especially not economies, which are the lifeblood of countries. So we need to develop measures that help, which is why perhaps when we become more techonolically greater, we will be able to reduce emissions.
Until then, let's hope the environment can still receive help.