5,519 results
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From the November 28, 1931, issue
ACTION OF STEEL UNDER STRESS REVEALED IN WRITING ON SAND How solid steel softens and flows like wax when compressed or stretched is being shown to the naked eye by Dr. A. Nadai at the Research Laboratories of the Westinghouse Electric and Manufacturing Company, at East Pittsburgh, Pa. In his new apparatus, a beam of […]
- Health & Medicine
Taking a toll: Antiviral drugs activate immune system
Promising antiviral drugs activate a key immune-system protein.
- Humans
Treaty Nears on Gene-Altered Exports
In an effort to help preserve biodiversity, negotiators from 130 nations crafted rules of conduct for international trade in living, genetically engineered organisms.
- Earth
Stemming the Tide
New approaches to stopping the introduction by ships of invasive species to North American waters are beginning to show promise but have a long way to go.
- Materials Science
Mammal cells make fake spider silk better
Using long and abundant water-soluble proteins secreted by bioengineered mammal cells, scientists have spun the first artificial spider silk demonstrated to have some of the remarkable mechanical properties of the real thing.
- Animals
Lemonade from Broken Amber
The fossilized microbes found inside termites that have been encased in amber for 20 million years are remarkably similar to those found within the ancient insects' modern cousins.
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Biological Dark Matter
The discovery that some genes encode RNA strands instead of proteins has surprised biologists.
- Ecosystems
Marine plankton put nitrogen in a fix
New genetic analyses of tropical marine microorganisms hint that some species are converting significant amounts of atmospheric nitrogen into nutrients, helping to fortify the base of the ocean's food pyramid.
- Health & Medicine
Human sweat packs a germ-killing punch
Sweat glands secrete a microbe-killing protein.
- Health & Medicine
Slowing lupus: Stifled inflammation limits kidney damage
A new therapy for the autoimmune disease lupus works in mice by thwarting activation of immune-system proteins called complement.
- Health & Medicine
Germ-Fighting Germs
Plants and animals arent the only things that get sick. Even pathogenic microbes can succumb to infections. Federal plant pathologists are now looking to capitalize on that phenomenon as a strategy to fight off food poisoning. R. Savidge Though nature seals most fruits and vegetables in germ-resistant peels and rinds, once those outer barriers are […]
- Health & Medicine
Troubled Hearts: Antibiotic might fend off second attack
An antibiotic might protect people with heart disease from future coronary events, according to the results of a small-scale trial.
