Biomedical engineers design and develop medical instruments and devices such as heart-lung machines, iron lungs, artificial kidney machines, realistic artificial limbs and organs such as heart valves and hips, pacemakers and monitoring devices. They also adapt computers to be of service to medicine.
Chemical engineers utilise their knowledge of the physical world to manipulate the interactions of individual atoms and molecules. Their talents are generally employed in the research and development of new materials and are critical to numerous fields including nanotechnology, energy storage, and computing.
Environmental engineers are concerned with assessing and managing the effects of human and other activity on the natural and built environment. They apply their engineering knowledge and skills to such things as environmental impact assessment, natural resources management and pollution control. Environmental engineers use the principles of civil engineering design and construction blended with a knowledge of biology and chemistry to provide practical solutions to problems arising from the impact of development on the environment.