Uncategorized
- Health & Medicine
Vitamin C and diabetes: Risky mix?
Vitamin C supplements may place people with diabetes at increased risk of heart disease.
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19494
Your article doesn’t state whether the people in the study were type 1 (insulin-dependent) or type 2 diabetics. As a long-time subscriber to Science News, I would appreciate it if you would try to state whether it is type 1 or type 2 diabetes mellitus, or both, in future articles. Carol Linn MillerNorman, Okla. The […]
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19493
It seems interesting that undersea flows have at least one characteristic different from rivers: “While river floods on land can create natural levees a few meters tall, the levees formed by [undersea] turbidity currents can grow up to 100 m[eters] high.” There are several sites on Mars where channels with loops can be seen. Although […]
- Earth
Hidden Canyons
Among Earth's unsung geological masterpieces are undersea canyons, some of which stretch hundreds of kilometers and can be deep enough to hold skyscrapers.
- Materials Science
Concrete Nation
From ultrahigh-performance concrete that bends like metal to concrete blocks that transmit light, scientists are pushing the physical and architectural limits of this ubiquitous construction material.
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Dynamic Earth
Rocks and minerals are the stars of this lively, interactive online exhibit from the Smithsonian Institution’s Museum of Natural History. In the pages now available (with much more to come), learn about various aspects of rocks and mining. The site includes a photo gallery devoted to minerals and a selection of mineral-related screen savers and […]
- Humans
Science News of the Year 2004
A review of important scientific achievements reported in Science News during the year 2004.
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- Humans
From the December 15 & 22, 1934, issues
Life on Mars, a substitute for morphine, the statistics of human behavior, ice and snow, and the top science stories of the year (1934).
- Humans
Letters from the December 18 & 25, 2004, issue of Science News
Think fast “Car deaths rise days after terror attacks” (SN: 10/9/04, p. 237: Car deaths rise days after terror attacks) mentions that the traffic volume was reduced following the attacks, yet fails to mention another likely factor in the increased deaths: Less traffic usually results in higher average speeds. Del DietrichSan Jose, Calif. Our sun, […]
- Earth
Ancient Heights: Leaf fossils track elevation changes
A new technique using altitude-dependent differences in fossil leaves may make it possible to chronicle the rise and fall of mountain ranges over millions of years.
