Humans
We summarize the week's scientific breakthroughs every Thursday.
- Health & Medicine
Defect Detector: Plugging holes in a breast cancer–gene screen
A genetic test not available in the United States catches many potentially cancer-causing BRCA-gene mutations not detected by the sole U.S. test.
- Humans
Letters from the March 25, 2006, issue of Science News
Bee movie? In the article about using harmonic reflected signals to track bees (“The Trouble with Chasing a Bee,” SN: 1/14/06, p. 23), I thought it was interesting to note that the original technology was created by the Russians as a spy device. The technology is still being used for a form of spying. Dwight […]
- Health & Medicine
Moldy whiff kills brain cells
A common black mold that blooms on moist cellulose-based materials produces a toxin that can kill certain brain cells.
- Anthropology
Capuchins resist inbreeding chances
Wild capuchin monkeys manage to avoid inbreeding, despite rampant opportunities for high-status fathers to mate with their grown daughters.
- Health & Medicine
Protozoa Aid Food-Poisoning Germs
Ubiquitous waterborne protozoa appear capable of aiding the survival of several types of bacteria responsible for gut-wrenching food poisoning.
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- Humans
Explore Your Knowledge
Test your math and science knowledge at the National Center for Education Statistics Web site. Select a test topic and grade level (4th or 8th grade), then see how you do on a set of multiple-choice questions. The questions are from the Trends in International Mathematics and Science Study (TIMSS). Go to: http://nces.ed.gov/nceskids/eyk/
- Humans
Science’s New Guard: Winners of annual competition get honors and hefty scholarships
For her water-quality research project, an 18-year-old from Utah earned top honors among 40 competitors in the final phase of the annual Intel Science Talent Search.
- Health & Medicine
Stent Repair: Coated replacements better than radiation
To clear clogged stents, the small mesh cylinders that doctors implant to prop open blood vessels, inserting a second, specially-coated stent works better than treatment with radiation.
- Anthropology
Evolution persisted in agricultural era
Natural selection has continued to propagate survival-enhancing gene variants in human populations over the past 10,000 years, according to a new genetic analysis.
- Humans
Letters from the March 18, 2006, issue of Science News
Comfort zones Just because living organisms were found in extreme conditions does not necessarily mean they were created in these localities (“Is Anybody out There?” SN: 1/21/06, p. 42). Another possibility is that the creation of life took place under more amenable conditions and that these organisms, through evolution, gradually adapted as the conditions changed. […]
- Health & Medicine
May I Propose a High-Fiber Toast?
Scientists have genetically modified wheat to boost a type of dietary fiber linked to numerous health benefits.
