Uncategorized
- Earth
Ice age hit Missouri 2.4 million years ago
Analyses of a soil sample from central Missouri suggest the date of onset of North America's most recent spate of ice ages.
- Earth
Ozone saps toads’ immune systems
In amphibians, ozone damages immune function in the lungs, suggesting a possible new contributor to worldwide amphibian declines.
- Math
Hospitals motivated to skimp on infection control
A new mathematical model suggests that the presence of nearby hospitals may give a hospital an economic incentive to relax its infection-control efforts.
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A new test for Alzheimer’s risk?
Failure in visual short-term memory of objects, called iconic memory, could be a warning sign of Alzheimer's disease.
- Astronomy
Hubble views bar in galaxy
The Hubble Space Telescope has captured a strikingly detailed image of the starlit arms, glowing gas, and dark dust clouds of a barred spiral galaxy called NGC 1300, which lies 69 million light-years from Earth.
- Health & Medicine
A drink a day might keep fuzzy thinking away
One alcoholic drink per day can stave off mental decline in elderly women.
- Health & Medicine
Dangerous Practices
Pharmaceutical companies' overaggressive marketing of risky drugs, compounded by conflicts of interest among physicians and government agencies, is hurting public safety, some researchers assert.
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19511
A glaring omission in this article is the obvious impact that direct marketing of prescription medications to the general public, mostly via television, has had in swelling the number of people taking superfluous medications. Stephen J. LevineRiver Edge, N.J.
- Anthropology
Cultivating Revolutions
New studies suggest that farmers spread from the Middle East throughout Europe beginning around 10,000 years ago in a multitude of small migrations that rapidly changed the continent's social and cultural landscape.
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19510
In this article you failed to mention a possibly important factor for the introduction of agriculture into Europe, namely, the creation of the Black Sea from a large freshwater lake at the end of the last ice age. Could this not have forced the early farmers westward after they had lost so much of their […]
- Humans
From the January 26, 1935, issue
A giant turbine flywheel, high-altitude plane flights, and high-energy cosmic rays.
- Archaeology
Chaco’s Past
Explore the intersection of modern science and ancient cultures at a Web site about New Mexico’s Chaco Canyon, launched by the Exploratorium in San Francisco. The site includes a look at connections between celestial alignments of prehistoric buildings in the canyon and recent solar research. It also contains a teacher’s guide to classroom activities for […]
