In this Teach Peace lesson from Scientists for Global Responsibility, learners will combine ethics and the science to assess nuclear weapons. Using Nuclear weapons: a beginner’s guide to the threats from Scientists for Global Responsibility, learners gain an understanding of the science and the effects of nuclear weapons and use that insight to inform their moral reasoning. Using the six sections of the Beginners Guide, learners will explore 1. What is a nuclear weapon? 2. the basic science of nuclear weapons 3. How many nuclear weapons are there? 4. How much destructive power do the nuclear-armed nations have? 5. A nuclear attack: the immediate effects 6. A nuclear attack: longer-term and global impacts