Chemical engineers invent, design, and manage products and processes that transform raw materials into valuable products such as bio-fuels, plastics, wine, pharmaceuticals, and artificial blood. They do this using the latest knowledge of biology, chemistry and physics to ensure viable commercial production whilst minimising loss of materials and energy consumption. This value-adding must be safe, economical and environmentally sound. It is a rapidly changing profession with chemical engineers working at the cutting-edge of fields such as molecular biology, nano-materials, chemistry, physics, mathematics and information technology.