In 1957, the president’s advisory committee on weather control explicitly recognized the military potential of weather-modification, warning in their report that it could become a more important weapon than the atom bomb [William B. Meyer, "The Life and Times of US Weather: What Can We Do About It?" American Heritage 37, no. 4 (June/July 1986),48].

Today [since 1969], weather-modification is the alteration of weather phenomena over a limited area for a limited period of time. [Herbert S. Appleman, An Introduction to Weather-modification (Scott AFB, Ill.: Air Weather Service/MAC, September 1969), 1].

In the broadest sense, weather-modification can be divided into two major categories: suppression and intensification o f weather patterns. In extreme cases, it might involve the creation of completely new weather patterns, attenuation or control of severe storms, or even alteration of global climate on a far-reaching and/or long-lasting scale.

Extreme and controversial examples of weather modification-creation of made-to- order weather, large-scale climate modification, creation and/or control (or “steering”) of severe storms, etc.-were researched as part of this study… the weather-modification applications proposed in this report range from technically proven to potentially feasible.