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To: yard_man who wrote (4679)	3/5/2006 10:22:46 PM
From: Seeker of Truth	Read Replies (1) \| Respond to of 218534

Substitutes and partial substitutes already exist. For example uranium and clean coal can substitute for burning oil to generate electricity. The electricity generated can drive a car for medium distances, thereby replacing oil to some extent. All of oil for transportation could be replaced by ethanol if the price of oil were high enough. Wind is a partial substitute, i.e. we can't generate and store enough energy via wind mills to substitute for ALL of the oil that is consumed. Far away in China an enormous dam has been built to replace oil use on a big scale. There are all kinds of substitutes; the question of cost is paramount.