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{{stub}}The first discovery of oil in America was in Titusville, Pennsylvania, in 1859.  It began yielding 25 barrels a day, by the end of 1859 the flow had slowed to 15 barrels a day.  The world would never be the same again.  By 1906, American oil production had reached 126 million barrels a year.   

{{stub}}The first discovery of [[oil]] in [[America]] was in '''Titusville''', [[Pennsylvania]], in 1859.{{fact}} It began yielding 25 barrels a day, by the end of 1859 the flow had slowed to 15 barrels a day.  The world would never be the same again.  By 1906, American oil production had reached 126 million barrels a year.   

Today petroleum constitutes 40% of Americans’ overall energy consumption in the United States, with coal being the other big source of energy.

Today [[petroleum]] constitutes 40% of Americans’ overall [[energy]] consumption in the United States, with [[coal]] being the other big source of energy.