Uncategorized
- Health & Medicine
Worms offer the skinny on fat genes
The identification of worm genes that regulate fat storage may provide insight into human obesity.
- Astronomy
Starry eruption on a grand scale
Monitoring the bloated star Rho Cassiopeiae, astronomers report they witnessed an explosion that blasted more material into space than any other stellar explosion ever observed.
- Physics
Streams plus nanostrands equals electricity
A dense bundle of carbon nanotubes develops a voltage difference along its length when immersed in a slow-flowing liquid.
- Chemistry
Synthetic molecule may treat anemia
Researchers have created a new form of the protein erythropoietin (EPO) using synthetic chemistry techniques.
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19221
Your article reports that chemically synthesized erythropoiesis protein (SEP) was more effective than the genetically engineered molecule. Is there speculation on why that is? Ann DershowitzWest Orange, N.J. Chemically constructed SEP molecules are much more consistent in size, shape, and other properties than genetically engineered erythropoietin. The polymer appendages put onto the molecule protect SEP […]
- Earth
9/11 ash, and more, found in river muck
Sediment cores pulled from the Hudson River near the World Trade Center site contain a thin layer of metal-rich ash and pulverized debris.
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19220
I am puzzled by Shuming Nie’s prognostication that quantum dots will “be the first example of nanotechnology that can really have some practical applications.” Colloidal gold particles of similar size to quantum dots have been used as high-resolution labels in electron microscopy for over 30 years. And due to their light-scattering properties, gold and silver […]
- Tech
NanoLights! Camera! Action!
Fluorescent particles of semiconductors are giving biologists a new view of cells and proteins.
- Tech
Bridge Building
For those fascinated by the art, science, and history of building bridges, this Web site provides a wealth of information and images devoted to structures designed to span obstacles of various sorts. Check out different bridge types, key components of bridges, explanations of forces that act on bridges, and much more. Go to: http://www.brantacan.co.uk/bridges.htm
- Humans
From the February 11, 1933, issue
YELLOW SODIUM LIGHT EFFECTIVE OUTDOORS A commercial application has been found for the extremely efficient sodium-vapor lamp. A highway in Holland is now illuminated with these light units giving off an intense yellow glow; and this light, which makes color discrimination impossible and is devastating to Miladys makeup, is said to be especially desirable for […]
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How the Butterfly Gets Its Spots
The spots on a butterfly wing turn out to be unusually good model systems for a range of disciplines from genetics to behavioral ecology, offering biologists a chance to paint the really big picture of how evolution works.
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Catch of the day for cancer researchers
Scientists are using glowing tumor cells inside zebrafish to study how cancer spreads.
