Engineering is almost as old as human life on earth.
The world's earliest civilizations employed engineers to design and build structures and buildings. That was the purpose of engineering for many thousands of years, the design and construction of structures. However, in the modern age, engineering has expanded to fields such as electricity, chemicals, nuclear energy and others. In these fields engineers create the delivery systems and safety features necessary to the use of the elements with which they work. To be an engineer requires a college degree in engineering and often a Masters degree also.