Coal, the other dark fuel.

While the world ponders its energy future, coal remains a plentiful and a reliable means to create much of the energy needed. This other "dark fuel" just may be the bridge we need to usher the world into the next generation of fuel technology. A related article in Research Penn State is at http://www.rps.psu.edu/indepth/coal.html.
Produced by: C Roy Parker

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