Mechanical engineers design and develop everything you think of as a machine, that is mechanical or that produces power. From home appliances, power tools, bicycles and computer hard drives to air conditioning systems, car engines, planes, turbines for jets and nuclear reactors, the profession of mechanical engineering is responsible for much of the world in which we live. In such a broad field, a mechanical engineer can look forward to a highly rewarding, dynamic career.Because of the tremendous impact mechanical engineers have on society, the curriculum also requires students to pursue studies in the social sciences and the humanities.