Uncategorized
- Chemistry
Web Elements
Want to know more than just selenium’s symbol, atomic number, and atomic weight? Created by chemist Mark Winter of the University of Sheffield, WebElements provides information on each chemical element’s history, uses, reactions, bulk and thermal properties, and more. Go to: http://www.webelements.com/
- Earth
Dusty workplace may cause change of heart
Occupational exposure to fine dust can trigger adverse changes in the hearts of even strong, healthy workers.
- Health & Medicine
Two drugs may enhance recovery from stroke
Two drugs, levodopa and dextroamphetamine, may help stroke patients to recover the ability to move and speak.
- Ecosystems
Fierce invader steals nests from a native fish
The round goby, a Eurasian fish that has invaded the Great Lakes, is causing the decline of the mottled sculpin by displacing the native from its spawning sites.
- Materials Science
Materials use nitric oxide to kill bacteria
A novel coating may offer a new way to fend off microbial buildup on catheters, artificial hips, and replacement cardiac valves.
- Materials Science
Speed demon gets hooked on silicon
A method for coating silicon with high-performance semiconductors such as gallium arsenide may make faster, low-power microcircuits both cheaper and more widespread.
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18973
“Bt corn risk to monarchs is ‘negligible'” is full of manipulative words. How exactly was the “highly polarized atmosphere surrounding genetically modified crops . . . hampering attempts to rationally plan and evaluate research”? The companies that make the strains of corn discussed in the article are not named, of course. Nor are any ties […]
- Earth
Bt Corn Risk to Monarchs Is ‘Negligible’
A much-anticipated report states that the most commonly planted forms of genetically engineered Bt corn pose only a "negligible" risk to monarch butterfly populations.
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18967
Regarding “Neandertals show ancient signs of caring,” it seems to me that rather than “pounding, chopping, or cooking tougher food” for a friend or relative, these kindly Neandertals probably just masticated a mouthful before passing it on. This is something people do all over the world. Sharon Rudahl Los Angeles, Calif.
- Anthropology
Neandertals show ancient signs of caring
A partial jaw unearthed in France indicates that Neandertals extensively cared for sick and infirm comrades beginning nearly 200,000 years ago.
- Earth
Scientists spy sixth undersea-vent ecology
A new group of hydrothermal vents found in the Indian Ocean are populated by communities of organisms that differ significantly from other such groups of vent systems.
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Brief diet alters gene activity
Even a short-term diet may activate anti-aging genes.
