The big event of the day for the eighth-grade students at Ken Caryl Junior High School in suburban Denver is the "Great Boil-Over." Under the rules, contestants are pitted against one another to determine who can boil water fastest —with the least amount of fuel. The exercise is part of a growing trend in U.S. elementary and high schools: instruction in the basics of energy conservation. The aim is to prepare students for a world where energy is no longer cheap or plentiful. Teachers explain...
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