1. The "giants" Newton was thinking of were the great scientists who had lived before
his time.
2. Although man has been growing mentally richer ever since he started to think, the electronic computer allows and will continue to allow him to perform tremendous "mental" tasks in a relatively short time.
3. Nearly all the great discoveries of science have been the rewards of accurate measurement.
4. Floods and bad farming over the years ruined a land that had once been rich, and made it miserably poor.
5. But great changes have been taking place in the manufacture of glass, and it can now be made as hard as steel or as soft as silk, as light as aluminum or as heavy as iron.
6. A space ship travelling at twenty-five thousand miles an hour will have been travelling for 120,000 years when it arrives there.
7.Now fresh water is becoming scare, but more and more is needed because of the increasing number of people in the world.
8. If it fails to take the next major step in space, America will have given up an essential part of its national character.
9. Until recently, scientists have been unable to devise a drill which would be capable of cutting through hard rock at great depths.10. Recently, scientists have become increasingly concerned about pollution and its effects on weather.
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