Some International Implications of Weather Modification Activities

Abstract
At the present time scientific opinion has shifted to the view that man can, in certain circumstances and at certain places, modify at least local weather conditions in limited ways. Many believe that man can dissipate certain “cold” fogs in limited areas for short periods; that he can increase rainfall or snowfall by perhaps ten to fifteen percent in a local area in narrowly limited circumstances; that he can probably convert hail into less dangerous forms of precipitation, also in narrowly limited circumstances.1 Some experiments are being conducted to learn more about such phenomena as hurricanes and lightning. Man still needs to learn much more and to develop faster computers before he can begin to think of safely undertaking intentional modification on anything more than a local and highly selected basis. Nevertheless, it is clear that even the limited effects thus far produced do not stop at some predetermined boundary; both nationally and internationally attempts to modify weather can be expected to cause dislocations and friction.

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