In this presentation to the Royal Academy of Engineering, Amory Lovins explains the economic and environmental impacts of nuclear power. By showing that companies and governments have cut energy intensity without the use of nuclear power, Lovins shows that nuclear power is not a necessary step in the fight against climate change. Lovins’ data shows that distributed and renewable energy provide sufficient energy without the unnecessary costs and risks incured by nuclear power. Lovins concludes that there is nothing that can save nuclear power from its dismal fundamental economics.