Word: clear
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Dates: during 1960-1969
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...shadowy war between Laotian government forces and Communist Pathet Lao guerrillas, China has so far stayed clear of the actual fighting. Peking, however, has launched a different sort of invasion against its diminutive neighbor to the south-one that may prove to be every bit as troublesome. Last year some 3,000 Chinese road builders moved across the border of China's Yunnan province into northern Laos. By the time the monsoon rains began last spring, the Chinese had pushed a gravel-topped all-weather road 55 miles south as far as Muong Sai, a town on an important...
...state of the Union. "Well, Chet, do you have an instant analysis?" "Yes, I do, David. I'd say it was the most magnificent, glorious, stirring speech since the Gettysburg Address. I think my biggest thrill came when he said, T want to make one thing perfectly clear.' I always get a thrill when I realize the President's going to make one thing perfectly clear...
...Clear Lake, Calif., is a shallow, 40,000-acre body of fresh water that lies about 100 miles north of San Francisco. For centuries, it was home for a large colony of Western grebes, lovely birds that swim with the stately grace of swans and dive as skillfully as loons. But 15 years ago, in an environmental tragedy unwittingly perpetrated by man, large numbers of grebes began dying off, and the once-clear waters of the lake turned murky and green. Now, by introducing a new ecological cycle, scientists have saved Clear Lake's grebes and even clarified...
...grebe's problems began in the late '40s when the local mosquito abatement district sprayed thousands of pounds of DDD, a chlorinated hydrocarbon pesticide, on Clear Lake to rid the area of swarms of buzzing black gnats. The chemical, a close cousin of DDT, worked so well that developers previously put off by the gnats began building houses around the lake...
...pairs to only 20 within one year. The baffling change was explained in 1962 by Rachel Carson, in Silent Spring. Grebes, she wrote, feed mainly on fish. The fish, in turn, eat insect larvae and zooplankton, and these foods had become saturated with the DDD dumped into Clear Lake. Thus, over a long period, the grebes accumulated lethal amounts of the long-lasting pesticide in their tissues and died by the hundreds. Even worse, because of the DDD in their eggs, thousands of grebes never hatched. Between 1958 and 1963 only one young bird was seen at Clear Lake...