Word: solarity
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Dates: during 1960-1969
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...fresh water is being matched by steady progress toward a cheap method of desalinizing sea water; nuclear energy has dispelled the neo-Malthusians' favorite bogeyman of exhausted coal and oil deposits; and should the earth's supply of uranium ever be used up, men could turn to solar energy-which is already used in Japan to operate 200,000 water heaters...
...existed on earth for about one billion years. Gold points out. It began as very simple forms of microscopic size, has developed slowly until only now is it reaching a level of physical development and technological competence that will allow descendants of those microbes to travel outside their own solar system. Certainly within the next few hundred years, he holds, man will be visiting planets of other solar systems. "Most of these planets will have unsuitable conditions for us to live there freely, but if they have no life on them, it is still possible that they can be contaminated...