Uncategorized
- Tech
Littlest catalysts get a lot of support
Tiny metal clusters used as catalysts are getting so small that presumably inert carrier materials that host them are also getting involved in the reactions.
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18993
Just a simple question from an avid subscriber. Is the homocysteine in this article the same as the l-cysteine or acetyl-l-cysteine that people take for health reasons in pill form? Paul A. PagnatoMcLean, Va. L-cysteine and acetyl-l-cysteine are quite different from homocysteine. l-cysteine is a detoxifying agent and free radical scavenger that’s the mirror image […]
- Health & Medicine
High homocysteine tied to Alzheimer’s
Research has linked the incidence of Alzheimer's disease and other forms of dementia to elevated blood concentrations of the amino acid homocysteine.
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Encouraging signs but no woodpecker
A birding team searching in Louisiana for the possibly extinct ivory-billed woodpecker heard a promising pattern of taps but did not see the bird or hear it calling.
- Health & Medicine
Tracking Tumors
Researchers are trying to visualize molecular and cellular changes as a cancer responds to therapy in order to predict whether treatments are effective sooner than it's currently possible to determine.
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Ivorybill Search
The huge ivory-billed woodpecker has remained one of the United States’ most charismatic birds, even years after its presumed demise. In the latest effort to find the bird, a Zeiss-sponsored expedition this year sought the woodpecker in a Louisiana swamp. Catch up with the doings of the woodpecker’s many fans and learn more about its […]
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From the February 27, 1932, issue
PUSSY WILLOW Florists shops have long been offering big, beautiful, and expensive wands of pussy willows. But now the willow trees and bushes out of doors are putting forth their own offerings: smaller catkins, perhaps, but with the authentic tang of the wild about them. Harmless, charming, furry wild kittens, beloved of children everywhere! Pussy […]
- Math
Ice Cream Wars
A visit to the supermarket can present a shopper with a bewildering array of choices. For ice cream alone, the consumer faces a variety of brands, flavors, container sizes, and types (fat-free versus low-fat versus premium, and so on). At the same time, deciding which items to stock is a formidable problem for retailers. They […]
- Health & Medicine
Vaccine Power: Immune cells target cancerous tissue
Researchers are enlisting a person's own immune system to attack prostate tissue, including cancerous cells.
- Materials Science
Materials Take Wing
Materials scientists are finding new uses for the billions of pounds of feathers produced each year by the poultry industry.
- Ecosystems
Cryptic Invasion: Native reeds harbor aggressive alien
A mild-mannered reed native to the United States is getting blamed for the mayhem caused by an evil twin.
- Humans
And Counting . . . : Latest census resets U.S. population clock
The 2000 census missed a little more than 1 percent of the nation’s population, due in part to a surge of undocumented immigrants to the United States in the late 1990s.
