Word: widing
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Dates: during 1950-1959
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...wide exploitation of these inventions, largely in the past 50 years, was another matter. Since 1900, the life of technological man has changed beyond recognition. He acquired unprecedented mobility, and electronic eyes and ears. Through public sanitation and chemotherapy, his internal parasites (disease microorganisms) were practically eliminated as causes of death in advanced countries. Nothing comparable had happened since man's external parasites (carnivorous animals) were licked back in the Stone Age. As a result, the average civilized man lives to a good old age instead of dying young. The effects of this deep biological change are being felt...