Radioactive waste from various sources, such as nuclear power generation and other nuclear fuel cycle related activities, radioisotope production and use for applications in medicine, agriculture, industry and research, is considered. It provides a measure of both the current status of radioactive waste management at any time and the progress made over time towards the overall sustainability of radioactive waste management. Radioactive waste, if not properly managed, can have a direct impact on health and the environment through exposure to ionizing radiation. The use of cars for passenger transportation is generally less energy efficient and has greater environmental and social impacts, such as pollution, global warming as well as a higher accident rate, than mass transit.