so, i've been pondering this global warming thing. let's say that the atmosphere is warming, that human activity is responsible, and that the results will be disastrous. (i am assuming, not asserting this.) and let's say, for example, that a radical reduction in hydrocarbon consumption could have a salutary effect. the problem is that no particular person, corporation, government, has any particular interst in reducing its own fuel consumption, especially if not everyone is doing likewise; whatever is motivating you to consume fuel will continue to do so. so: if we were to do something about this, it would require an amazing act of pure universal altruism: everyone giving up littlwe bits of this and that, without any self-interested motivation. maybe with sufficiently compelling documantaries, our species can be brought to this point, but the history is not particularly happy. presuming that we do not merely acquiesce, as perhaps we ought, in the destruction of our species, i'd pin my hopes on saleable technological fixes, bought by large governments with the power to tax.