Chemical engineering
Trianel power plant in Hamm-Uentrop.'Chemical engineering' is a branch of engineering dealing with chemistry that came to existence in the early 20th century. From Petroleum to Penicillin. Before this time, chemical plants were designed by chemists, who were trained to work on a small scale only. Chemical engineering combines the jobs of a chemist and that of industrial engineer. This makes factories more efficient and chemicals much cheaper. There are many different types of jobs for people with degrees in chemical engineering.