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Politics : View from the Center and Left -- Ignore unavailable to you. Want to Upgrade?

To: TimF who wrote (62997)	5/2/2008 6:07:21 PM
From: Cogito	Read Replies (1) \| Respond to of 541960

>>What your time frame requirement for an energy source to be considered sustainable?<< Tim - I'd say that an energy source that doesn't run out at some point is sustainable, and one that will isn't. I would also say that it's a legitimate argument to say that if it lasts for a hundred years or so, that's good enough. But I think in the case of coal you have to look at the longer term consequences of using it as a primary source of energy, and factor that in to the question of sustainability. Is it really OK to rely on coal for the next hundred plus years? Will it not become more and more expensive to mine it over that period? Are we all OK with the environmental impact of increasingly widespread coal mining, in addition to that of burning it? Ask yourself this, in a hundred years (when the troops will be coming home from Iraq) what will our country look like if we have used coal as our primary energy source between now and then? - Allen