Chemical engineering touches just about every part of our lives. If you have put on soft contact lenses, changed into sweat-proof athletic wear, filled your car with gasoline before driving to the gym, and consumed purified water from a plastic bottle or artificially sweetened soda after your workout, you can thank chemical engineers for making those products possible. Chemical engineers use chemistry, physics, biology, math and other sciences - along with engineering principles - to make better products such as high-efficiency fuels, medicine, electronics, food and cosmetics. Chemical engineers design processes and products to solve problems and to supply vital materials for our technology-based society. Their work ranges from making clean energy, to producing more-affordable medicine, to streamlining semiconductor manufacturing - and even ways to improve food production and processing.