A major in Chemistry leads one to a trail head at graduation from which many career paths may be taken. Another path leads to graduate studies in chemistry or biochemistry, fore-shadowing a life of teaching and research.
Most environmental problems have a fundamental chemical basis.
The chemistry major is well prepared to attack such problems, both technically and politically. Chemical analysis underlies many specialties. Criminal forensics, medical tests, and impurity testing come to mind. The chemistry major may choose a path in one of these directions. Synthesis of new materials and drugs is often the goal of the chemical and pharmaceutical industries.