Uncategorized
- Humans
Web site debuts on junior high science
A new Web site reviews the accuracy of commonly used middle school physical science books and offers tips and assistance for teachers working from those texts.
- Math
Tricky Dice Revisited
The game involves a set of four cubic dice, each one numbered differently. You let your opponent pick any one of the four dice. You choose one of the remaining three. Each player tosses his or her die, and the higher number wins. Amazingly, in a game involving 10 or more turns, you will nearly […]
- Math
Tricky Dice Revisited
The game involves a set of four cubic dice, each one numbered differently. You let your opponent pick any one of the four dice. You choose one of the remaining three. Each player tosses his or her die, and the higher number wins. Amazingly, in a game involving 10 or more turns, you will nearly […]
- Agriculture
Journal disowns transgene report
The journal Nature now says it shouldn't have published a report that genetically engineered corn is leaking exotic genes into the traditional maize crops of Mexico.
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19055
Shame on Nature for saying, “the evidence available is not sufficient to justify the publication of the original paper.” The fact that transgenes get into maize is cause for caution. The agribusiness conglomerates are spending millions to stifle any intelligent debate about the risks and benefits of genetically engineered crops and modern chemicals. Without information […]
- Earth
Stemming the Tide
New approaches to stopping the introduction by ships of invasive species to North American waters are beginning to show promise but have a long way to go.
- Chemistry
The True Sweet Science
New techniques and tools are helping scientists elucidate the roles that complex sugars play in the human body and in drug manufacturing.
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From the April 9, 1932 issue
SPIDERS’ EGGS FORM PATTERN LIKE MOSAIC OF PEBBLES Like a rough mosaic of pebbles is the array of spider’s eggs photographed by Cornelia Clarke and reproduced on the cover of this week’s Science News Letter. Although smaller than small pinheads, the enlarging lens brought the eggs up to such apparent size that they were guessed […]
- Astronomy
Galaxy Hunter
At the interactive “Galaxy Hunter” Web site, students use data from the Hubble Space Telescope to investigate a bewildering assortment of deep-space galaxies in various stages of evolution–and learn statistical concepts such as sample variability and size along the way. Go to: http://amazing-space.stsci.edu/ghunter/
- Materials Science
A Field of Diminutive Daisies
Researchers have created tiny daisies as a demonstration of a new technique that creates three-dimensional structures from carbon nanotubes.
- Health & Medicine
Blood Vessel Poisoning: Arsenic narrows artery that feeds brain
New research suggests that drinking arsenic-laden water can produce dangerous narrowing in the carotid artery, which channels blood through the neck to the brain.
- Health & Medicine
Scrambled Drugs: Transgenic chickens could lay golden eggs
Scientists have created transgenic chickens able to produce foreign proteins—and, potentially, pharmaceuticals—in their eggs.
