"When I'm in the U.S. Senate, I will fiercely oppose the president's attack on Kentucky's coal industry, because protecting our jobs will be my No. 1 priority."

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For the first time there was constructed with this machine [locomotive engine] a self-acting mechanism in which the interplay of forces took shape transparently enough to discern the connection between the heat generated and the motion produced. The great puzzle of the vital force was also immediately solved for the physiologist in that it became evident that it is more than a mere poetic comparison when one conceives of the coal as the food of the locomotive and the combustion as the basis for its life.

— Carl Ludwig