Uncategorized
- Anthropology
Polynesian Latecomers: Easter Islanders took fast track to culture
New radiocarbon dates from Easter Island indicate that the isolated Polynesian island was first colonized around A.D. 1200, up to 800 years later than had previously been thought.
- Health & Medicine
Got Data? Consuming calcium, dairy doesn’t keep off weight
Dairy products and other calcium-containing foods don't prevent weight gain, according to a 12-year study of middle-aged men.
-
19652
In your article you report, “Every 4 years, each volunteer completed a questionnaire about his body weight and dietary habits.” Any dieter knows that it is next to impossible to remember what one has eaten 4 days ago. Any more details on how the data was acquired and validated? Ivan MannHoover, Ala. Volunteers were asked […]
- Astronomy
Magnetic Memory: New model forecasts solar storms
A new computer model predicts that the next solar-activity cycle won't begin until late 2008, a year later than the sun's standard cycle would forecast.
- Humans
Letters from the March 11, 2006, issue of Science News
Seasonal effect? Might your article, “Bright Lights, Big Cancer” (SN: 1/7/06, p. 8), on breast cancer have missed something? If the daily light-dark cycle affects melatonin, is there a seasonal change in cancer rates in the Northern (and Southern) Hemispheres? If so or not, that might give a clue to any latency period. Alan MacGregorSalmon […]
- Health & Medicine
Genes for macular degeneration
Variations in two genes could account for three-quarters of all cases of age-related macular degeneration.
- Health & Medicine
Low-protein diet boosts treatment
A diet low in protein can improve the effectiveness of drug therapy and reduce the periods of the most debilitating symptoms suffered by Parkinson's disease patients.
- Chemistry
Fragment foils Alzheimer’s protein
Researchers have synthesized a protein fragment that, in test tubes, disrupts the formation of the fiber networks suspected to cause Alzheimer's disease.
-
Thymus twice as nice for mice
Mice have a second thymus, located in the neck.
-
- Health & Medicine
A link between emotional stress and heart attacks
In some people with heart disease, a stressful event precipitates changes in blood components and flow that may trigger a heart attack.
- Planetary Science
Pluto’s posse
Images taken by the Hubble Space Telescope on Feb. 15 confirm that Pluto has two small, previously unknown moons.
