Word: greatly
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Dates: during 1960-1969
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...three decades, they flocked to the cities from the land of cotton, the Great Plains, the corn belt and Appalachia. It was greater even than the great Western trek of the late 19th century. In 1940, 30.5 million Americans lived on farms. Only 10.5 million remain. Now the city-bound flow has slowed to a trickle. According to new data compiled by the Agriculture Department, the farm labor force (age 14 or older) has remained static during the past two years...
Sooner or later, the great migration had to taper off. After a quarter of a century, the revolution in agricultural techniques finally produced a kind of demographic equilibrium. One farmer now feeds and clothes 42 other people. His spread averages 377 acres, 30% larger than a decade ago. And this evolution has ensured his survival...
...Pygmies and Hottentots." He lamented the "flat, expressionless faces" of his countrymen, went on to describe their "disproportionately large head, elongated trunk and short, often bowed legs." Japanese tourists, he recalled, often have to pay twice as much as other foreigners for a prostitute's favors in the great cities of the world, and he observed that "Negroes, their pigmentation of skin notwithstanding, are at least taller and straighter than the Japanese and perhaps have a greater sex appeal." All this created waves of giggles among the good-time girls of the Ginza bars, but it was scarcely calculated...
...artificial kidney and an early artificial heart researcher, complained in Los Angeles that cardiologists are reluctant to try the devices "because anything artificial is looked upon with suspicion." He predicted that physicians would revise their thinking when they realize that the familiar heart drugs, in which they put great confidence today, cannot save patients whom an artificial heart might keep alive. But until man-made devices come along, Cooley intends to continue with transplants...
...Pisa in A.D. 1202. To solve a hypothetical problem about the multiplication of rabbits,-he used the numerical series 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, etc. Each number following the first 1 consisted of the sum of the two previous numbers. Fibonacci attached no great significance to the sequence, and it was generally ignored through the years by all but dedicated mathematicians. Then, in the early 1960s, Brother Alfred Brousseau, who teaches math at St. Mary's College near San Francisco, became interested in the numbers and their applications. "We got a group...