There are numerous articles and videos available online and in print. Here are some of the best.
This 52-minute video provides a visual overview of the threat posed by an EMP
This is an excellent explanation of the threat of EMP.
One Second After is considered the best novel depicting what an EMP event might be like.
Jerry Emanuelson is an electrical engineer, and here he offers advice about how you can protect radios and home power systems from damage.
This is one of many news articles that suggests Iran is preparing the capability of EMP attack.
This news article explores North Korea’s efforts to create nuclear EMP weapons.
This organization is working to enact federal legislation to harden the electrical grid (e.g., the Shield Act). The site features interviews with EMP experts, foreign policy experts, and legislators.