Uncategorized
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Babies’ sound path to language skills
A test of early speech perception shows promise as a way to identify 6-month-olds headed for language difficulties as toddlers.
- Health & Medicine
Mexican Americans face stroke risk
Middle-aged Mexican Americans face twice the stroke risk that non-Hispanic whites do.
- Tech
Helping circuits get enough oxygen
The search for new insulators needed for making ever-smaller circuits may get a boost from a new electron microscopy technique sensitive to a single oxygen atom missing from a crystal layer.
- Health & Medicine
Vitamin E may curb colds in old folks
Vitamin E seems to help elderly people fend off colds.
- Tech
Sound power for deep-space travel beyond sun’s reach
An unusually efficient new type of power unit for spacecraft uses sound to convert heat to electricity.
- Tech
Ocean Envy
By mimicking the flippers of penguins, whales, and dolphins, engineers hope to make ocean vessels that are as maneuverable and efficient as the marine animals.
- Earth
Paved Paradise?
The precipitation-fed runoff that spills from impervious surfaces such as buildings, roads, and parking lots in developed areas increases erosion in streams, wreaks ecological havoc there, and contributes to urban heat islands.
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19455
It wasn’t the news of polluting runoff that caught my attention in your article, but the startling statistic that the 3 million annual increase in the U.S. population costs $480 billion in construction costs alone. That’s $160,000 dollars for each added person! John BrooksLake Shastina, Calif.
- Math
More Progressive Primes
The first sequence consisting of 23 prime numbers in arithmetic progression has been discovered.
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From the August 25, 1934, issue
Earrings from Oklahoma's mound builders, a bathysphere's record descent, and gamma rays for splitting atoms.
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Bone Biology
Susan Ott, a professor of medicine at the University of Washington, has created a Web site that provides information to physicians and others about bone physiology and osteoporosis. Topics include bone density, prevention and treatment of osteoporosis, and more. There’s also a special section for kids. Go to: http://courses.washington.edu/bonephys/
- Health & Medicine
Keeping Cells under Control: Enzyme suppression inhibits cancer spread
Shutting down an enzyme can slow the spread of cancer in mice.
