Word: abouts
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Dates: during 1960-1969
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Records of ancient temperatures are provided by O18, a heavy isotope of oxygen that has 18 neutrons in its nucleus instead of the 16 found in ordinary oxygen atoms. About one of every 500 atoms of oxygen in water is O18, and water molecules containing the heavy isotope will fall...
By dating each ice layer like growth rings on a tree, the scientists have been able to use the oxygen-isotope ratio to chart yearly variations in weather to depths of 300 ft. Beyond that level, the annual record becomes blurred. But it is still clear enough to let scientists...
Nature's Relics. Since they published their findings in Science last month, Chester C. Langway Jr. of the U.S. Army's Cold Regions Research and Engineering Lab at Hanover, N.H., and his three Danish collaborators have been deluged with requests for ice specimens. The interest of other scientists...
Barrage of Sights. What Sesame Street does, blatantly and unashamedly, is take full advantage of what children like best about TV. "Face it-kids love commercials," explains Joan Ganz Cooney, executive director of NET's Children's Television Workshop. "Their visual impact is way ahead of everything else...
So great is enthusiasm for this series that the three commercial networks have taken unprecedented steps to publicize it. ABC did interviews with Mrs. Cooney and Dr. Palmer for its network news show. CBS is running, free, Sesame Street commercials. And last Saturday NBC presented a half-hour special about...