Uncategorized
- Health & Medicine
Twice bitten
Repeat episodes of Lyme disease are more likely caused by a second tick bite rather than by a return of the original illness.
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19893
“Antibiotics in infancy tied to asthma” (SN: 7/7/07, p. 14) reported a correlation but no confident explanation for the relationship between receiving antibiotics and later developing asthma. This article, which reports that children with Helicobacter pylori in their stomachs are less likely to get asthma, seems to offer a convincing answer. Virginia BrockRock Island, Ill.
- Health & Medicine
Ulcer bug may prevent asthma
Children whose stomachs carry the bacterium Helicobacter pylori are at lower risk for asthma than children who don't have the bug.
- Humans
Math clubs get national sponsor
A math group is offering all U.S. middle schools free materials to set up clubs aimed at making math fun.
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Stored blood loses some of its punch
Loss of nitric oxide from donated blood that's been stored for as little as 3 hours could impair its ability to flow through a recipient's blood vessels.
- Materials Science
Polymer could improve natural gas purification
A new polymer membrane that efficiently separates carbon dioxide from methane could greatly ease the processing of natural gas.
- Astronomy
Record-breaking supernova
A newly discovered supernova, 100 billion times as bright as the sun, is the most luminous ever recorded.
- Humans
Letters from the October 27, 2007, issue of Science News
Heated dispute “It’s not nice to fool Mother Nature” (SN: 8/25/07, p. 125) states that “an increase in the atmospheric concentration of carbon dioxide, not an increase in solar radiation” is responsible for current global warming. What is the scientific—not political—basis for that remark? Warren FinleyLaguna Beach, Calif. Increasing solar radiation doesn’t affect climate change? […]
- Earth
The Big Dry
Parts of Australia have suffered from severe drought for more than a decade, and people, vegetation, and animals are feeling the heat.
- Tech
Virtual Worlds, Real Science
Epidemiologists and social scientists are tapping into virtual online worlds inhabited by millions to collect data with real-world uses.
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From the October 16, 1937, issue
Biological prospecting on two remote mesas near the Grand Canyon, a newly described and widespread form of meningitis, and primate fossils from the Crazy Mountains of Montana.
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LEDs for the Rest of Us
Light emitting diodes, better known as LEDs, are the coolest new light sources. They’re tiny, long-lived, and rugged. But how do they work? Check out this site if you desire considerably more detail than can be found in a two-sentence summary. Go to: http://electronics.howstuffworks.com/led.htm
