Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

In modern usage, civil engineering is a broad field of engineering that deals with the planning, construction, and maintenance of fixed structures, or public works, as they are related to earth, water ...

Security engineering is the field of engineering dealing with the security and integrity of real-world systems. It is similar to systems engineering in that its motivation is to make a system meet ...