Our use of petroleum through history may surprise some readers
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While most of us think of the petroleum age starting in the late 1850s, when North America's first oil well began gushing oil, human use of petroleum actually goes back much further.
Asphalt, a heavy constituent of petroleum (see last week's blog), was used four thousand years ago in constructing the walls of Babylon. During the Roman era, oil was collected and used in the province of Dacia (now Romania), where it was referred to as "picula."
http://www.greenbuildingadvisor.com/blogs/dept/energy-solutions/our-history-petroleum-use
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