| http://www.w3.org/ns/prov#value | - Someday, it may win wider acceptance as a replacement for gasoline in our cars and trucks.Natural gas' abundance and low price come as governments around the world debate how to curtail carbon dioxide and other pollution that contribute to global warming. ....Coal may still be cheaper, but natural gas emits half as much carbon when burned to generate the same amount electricity.Today, about 27 per
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