Hurricane Katrina became one of the most destructive and costliest natural disasters in the history of the United States. In addition to causing death and destruction, Hurricane Katrina, followed by Hurricanes Rita and Wilma, heightened societal fears and misperceptions about the nature of hurricanes. Teachers and public health educators across the country and worldwide had only limited materials to educate their students on the risk and risk factors of hurricanes and disasters. When materials were available they were difficult to find by people outside of the scientific community, and their format was not user-friendly. Overall, the scientific community was poorly prepared to deliver basic scientific facts about hurricanes to their own students, students of the world, and the general public. The Global Network Supercourse group decided to change this situation and deliver a basic lecture on the science of hurricanes to the audience of public health professionals and educators. To address the problem of the “epidemiology of fear” associated with disasters; our group developed several scientific lectures dealing with basic facts about hurricanes, and made them available through the Supercourse network of over 30,000 scientists 151 countries. As scientists and as public health educators, the Supercourse group will continue to deliver cost-effective public health knowledge about the science of natural and man-made disasters to prevent the “epidemiology of fear” from infecting our collective consciousness. What was done by the Supercourse group with JIT knowledge on hurricanes could potentially serve as a model for teaching the public about all natural and man-made disasters through “lectures on demand.”