Uncategorized
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19107
Your article seems to imply that there is something worse about spending 10 hours a week surfing the Web than other pastimes. Why isn’t 10 hours a week spent reading books, watching television, doing crossword puzzles, listening to music, or other solitary hobbies just as “socially isolating”? The sports fan who watches 10 hours of […]
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Survey raises issue of isolated Web users
A controversial study suggests that heavy users of the Internet become socially isolated.
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19106
If large black holes are at the heart of most galaxies and they are dark by definition and we have no way to tell what their size is, couldn’t they be hiding enough mass to make up the missing mass in the universe? Georges KaufmanTampa, Fla. A central black hole would not cause the visible […]
- Astronomy
Votes cast for and against the WIMP factor
Physicists this week duked it out over a bunch of WIMPs, elementary particles that—if they exist—could solve a decades-old mystery in cosmology and help unify the four fundamental forces of nature.
- Chemistry
Power plants: Algae churn out hydrogen
Green algae can produce hydrogen, a clean-burning fuel that could one day power pollution-free cars.
- Physics
Manhandled molecules, midget memories
A thick coating of organic chemicals can record information at densities potentially a million times greater than is possible with current compact disk technology.
- Archaeology
Vase shows that ancients dug fossils, too
A painting on an ancient Corinthian vase may be the first record of a fossil find.
- Animals
New frog-killing disease may not be so new
The skin disease that savaged amphibians in remote wildernesses in the 1990s has been linked to outbreaks in the 1970s.
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Shotgun approach bags the fruit fly genome
Scientists announced the completion of the Drosophila genome-sequencing project.
- Health & Medicine
Marrow Can Hide Breast Cancer Cells
Breast cancer patients who have stray cancer cells in bone marrow are more likely to die of cancer or have a recurrence of cancer elsewhere in the body than are breast cancer patients not harboring such cells.
- Humans
From the February 22, 1930, issue
THE “BARREL” OF CORONA When high voltage surges on electric transmission lines jump an ordinary string of insulators, arcs form from one insulator to the other and destroy them. But when both ends of the string are protected by metal grading shields, the arc jumps through the air from shield to shield and saves the […]
- Health & Medicine
Surgery Guide
Designed for patients and their families, physicians, and students, this Web site provides detailed information about a variety of common surgical procedures, ranging from hernia repair to LASIK for vision correction. Illuminating diagrams and cutting-edge animation accompany each description of a type of surgery. Go to: http://yoursurgery.com/index.cfm
