I believe that this whole idea of using nuclear explosions for peaceful purposes have been stopped in a premature way. For me personally they gave occasion to some very interesting expeditions, plans to engage in geographic engineering, making harbors, making canals. One of the very interesting possibilities was a harbor in northern Alaska. Another one, to get a sea level Panama Canal, which turned out in the end not to be practical at the location of the Panama Canal because at that time- at that place the consistency of the earth did not allow to dig a canal with sufficiently steep walls and the amount of earth that had to be moved in order to make a sea level canal would have been too big. But a possibility of a sea level canal somewhere between South and North America is not quite excluded. Here we have one big field that because of fears of nuclear explosives has been eliminated, at least temporarily stopped. And I believe in the future we will find the methods where, to everybody's benefit, appropriate changes of this kind will be performed. To my mind the best counter to the fear of the atomic bomb is not the elimination but the use of these means in a manner that benefits several nations and that helps to make nat- international cooperation much more of a reality.