Today when the world is facing serious energy crisis and climate change problems, the issue of nuclear energy and power has regained much importance particularly in countries with rapidly growing energy demands like India and China, and where alternatives sources are scarce or expensive like in Japan and South Korea. The book, divided into seven chapters, focuses on various positive and negative aspects of nuclear energy and power. The chapters elaborate on issues like an in depth analysis of contemporary nuclear power production, nuclear safety and existing systems of safeguard, including the roles and responsibilities of International Atomic Energy Agency (IAEA), the performance of nuclear reactors worldwide, the transport, storage and disposal of radioactive materials and wastes, environmental health and other effects of nuclear energy and power technologies.