Word: revealed
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Dates: during 1980-1989
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...cause of Alzheimer's and its cure remain unknown. This week, however, an important breakthrough will be announced in Washington that may change this bleak picture. At the annual meeting of the Society for Neuroscience, scientists from New York City's Albert Einstein College of Medicine will reveal that they have identified what could be the first fully accurate diagnostic indicator of Alzheimer's in living people. The find could lead to improved therapy and even, in the next several years, to an understanding of what causes the illness...
...important to realize that inherent in any language is its constant subjectability to change. No language, despite the grandest efforts, can resist change over time. Any perusal of texts from a wide variety of time periods will reveal this. No stage of a language is inherently superior to any other, since language naturally adapts to new environments and conditions. If people find it easier to make themselves understood by saying something in a slightly new fashion, such innovation will survive depending on its effectiveness and usefulness. Thus we see the application of the survival of the fittest theory to language...
...teach them something of momentous importance will find this novel more than adequate. The quirks and unexpected twists of life are examined with care that exposes layer upon layer of meaning. Loving family relationships, studied unsparingly, pulse with hidden resentments. Social conventions--"exchanging commonplaces and untruths"--are scrutinized to reveal the complexity beneath cool facades. Courtship, marriage, remarriage, cohabitation, bachelorhood and spinsterhood--all achieve an encompassing inventive dimension...
Contaminated liquids that had been passed through porcelain filters designed to purify laboratory solutions and capable of blocking the passage of the smallest known bacteria were still able to infect both plants and test animals. However, careful microscopic scrutiny of the filtered liquids failed to reveal the "filterable agents" that caused the diseases. Also, unlike bacteria, these agents could apparently not be grown in culture dishes, where scientists hoped they might form colonies large enough to be seen with the naked eye. The source of such diseases as mumps, smallpox, yellow fever, rabies and dengue remained a mystery...
...microscopes. But in 1931 the invention of the electron microscope -- for which German Physicist Ernst Ruska finally won the Nobel Prize this year -- broke the light barrier. The new instrument -- along with a technique called X-ray crystallography (in which X rays are diffracted through crystallized virus particles to reveal their molecular structure) -- at last provided a view of the bizarre and startling world of the tiny creatures...