Uncategorized
- Animals
Locust Upset: DNA puts swarmer’s origin in Africa
The desert locust was not an ancient export from the Americas, according to a new DNA analysis.
- Humans
Letters from the January 7, 2006, issue of Science News
Death in the Americas I was wondering if researchers have given any thought to the idea that in the same way that disease devastated human populations after the European discovery of the Americas, perhaps disease was a contributing factor in the demise of much of the fauna of the Western Hemisphere (“Caribbean Extinctions: Climate change […]
- Chemistry
Molecular Car Park: Material packs in carbon dioxide
A porous, crystalline material composed of metal and organic building blocks holds more carbon dioxide than other porous substances do.
- Earth
Gunning for the Gut: Tiny particles might fight invasive zebra mussels
By modifying a technique used to flavor foods, researchers have made a substance that poisons the zebra mussel.
- Health & Medicine
Alzheimer Clue: Busy brain connections may have downside
Brain areas that are chronically activated have excess amyloid beta, the waxy protein associated with Alzheimer's disease.
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It seems to me irresponsible even to float the idea, as neurologist David M. Holtzman does in this article, of chemically suppressing idle thought and daydreaming in people. Who can claim a basis for clinical discrimination of “bad” idle thought and daydreaming from the “idle thought” of intuitive problem solving and poetic imagination? More of […]
- Anthropology
Stone Age Footwork: Ancient human prints turn up down under
An ancient, dried-up lakeshore in Australia has yielded the largest known collection of Stone Age footprints, made about 20,000 years ago.
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This article brought a strange conundrum to mind. If Paleolithic man was in Australia 40,000 years ago, why were the aboriginal people still living in the Stone Age when the first Europeans arrived? There were advanced cultures in the Americas by 100 B.C.E., whose ancestors had arrived by 12,000 to 15,000 years ago. Norbert EdwardsBuffalo, […]
- Earth
Estimating a temblor’s strength on the fly
New analyses of ground motions caused by large earthquakes suggest that it may be possible to estimate the full magnitude of such quakes immediately after they start rumbling.
- Tech
Facing a hairy electronics problem
Investigating why kinky metal filaments sprout spontaneously on electronic- circuit cards, researchers have found that the way metal films have been electroplated onto the surface in the first place plays a lingering role.
- Anthropology
European face-off for early farmers
A new analysis of modern and ancient human skulls supports the idea that early farmers in the Middle East spread into Europe between 11,000 and 6,500 years ago, intermarried with people there, and passed on their agricultural way of life to the native Europeans.
- Health & Medicine
Protein exposes long-term risk from heart problems
Elevated blood concentrations of a certain protein can signal risk of death in people with heart problems.
