Uncategorized
- Earth
Diesels: NO rises with altitude
The combustion chemistry of heavy-duty diesel trucks changes with altitude.
- Earth
Passive smoking’s carcinogenic traces
Researchers isolated markers of a cigarette-generated carcinogen in urine of nonsmoking women married to smokers.
- Health & Medicine
Fatty plaques are unstable in vessels
Fatty plaques that form on the inside of blood vessels are less stable and hence more prone to rupture than are hard, calcified plaques.
- Health & Medicine
Parkinson’s implants survive in brain
Human embryonic stem cells transplanted into the brains of people with Parkinson's disease survive and grow better in patients under 60 years of age than in older patients.
- Astronomy
Creating a warmer, wetter Mars
A new study adds to the evidence that past volcanic activity could have temporarily created a warmer, wetter Mars, a place on which water once flowed freely.
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Things That Go Thump
There's a whole world of animal communication by vibration that researchers are now exploring.
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From the March 21, 1931 issue
MUSHROOMS SUDDEN GROWTH FOLLOWS LONG PREPARATION Quick as a mushrooms growth, is the phrase we like to apply to sudden and unexpected developments. An oil town, a stock-market fortune, the reputation of the writer of a hit, are all referred to the mushroom standard of comparison. Yet the mushroom is no creature of magic, not-here […]
- Computing
Making the Macintosh
Interested in computer history? Alex S. Pang of the Stanford University Library has assembled fascinating material from a variety of sources, including papers donated to the university from Apple’s corporate library, to portray the invention and emergence of the Macintosh personal computer. The evolving Web site includes sections on counterculture and computing, the early Macintosh, […]
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18911
This article attributes the low visibility of the book Introductory Physical Science to the publisher’s limited means of promotion. This is only part of the story. Much more serious is the fact that many states’ mandated tests demand such shallow coverage of so many topics that they force bad textbooks on the schools. Uri Haber-Schaim […]
- Humans
Where’s the Book?
Innovative curricula are moving science education away from a reliance on textbooks.
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From the March 14, 1931, issue
NEW WELDED PIPE LINE CARRIES WATER TO SAN DIEGO On the front cover of this weeks SCIENCE NEWS LETTER, the cameraman has caught two electric arc welders tying in an important section of a 19-mile-long steel serpent, 40 inches in diameter in some places and 36 inches in others, that will carry water from reservoirs […]
- Math
Subtle Logic, Winning Game
Seemingly simple games can serve as thought-provoking exercises in mathematical logic. They can provide deep insights into subtle issues that confront logicians who are interested in the foundations of mathematics. So-called Ehrenfeucht games have proved particularly useful for tackling certain aspects of mathematical logic. They were developed in the 1960s by Andrzej Ehrenfeucht, who is […]
