Civil engineers design and develop the construction of transportation infrastructure and water supply and sewage systems, after attaining at least a bachelor's degree in engineering and several years of experience.

FORBES: 5. Civil Engineer

Increasing oil production takes quite a few years, involving time spent on seismic studies, exploratory drilling, production drilling, as well as construction of infrastructure for transportation and refining.

FORBES: Energy Forecast 2013-2014: Convert to Natural Gas

Researchers at the University of California, Berkeley, for instance, found that factoring in infrastructure construction plus vehicle and fuel production increased total emissions for various modes of transportation, particularly train.

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