Word: ages
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Dates: during 1950-1950
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...Girl of the Streets, was about to die at 28. Pessimism and doubt were not hard to find on Jan 1, 1900, but the world, and especially the U.S., sided with Alger. It looked forward to the 20th Century with a degree of confidence unequaled by any previous age and unregained since. Paced fast or slow, progress was sure, limitless, irreversible. Virtue walked with progress; they fed each other...
...most startling discoveries came in the last 50 years, and they were made when many scientists had decided that the age of discovery was about over...
...Age of Harvest. Practical technology did not need the new physics. Classical physics, along with chemistry and biology, gave technicians all the tools they could handle...
...early part of the 20th Century was not an age of great invention. It was rather a period of harvest. Most of the modern objects which are used so lavishly today had beginnings before 1900. Internal combustion engines, which made automobiles and airplanes inevitable, were running in the 1880's. Radio waves were discovered by Hertz in 1887, and the first paid radiogram was sent from the Isle of Wight in 1898. The first public telephone exchange was opened in New Haven, Conn, in 1878. The "germ theory" of disease dates from the 1860s. It is hard to find...
...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 in every sector of modern society...