Gibsons statement If we just stopped burning coal the lights would go out. Period. (lines 9-10) means that
coal is not an efficient energy source to meet the worlds present needs.
it is necessary to stop consuming so much electricity in the winter periods.
the use of coal as an energy source should be condemned in the near future.
the world must continue producing coal-based energy to avoid the shortage of power.
the energy generated from dirty old coal will not be useful to prevent blackout periods.
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