Uncategorized
- Computing
Tight packaging for digitized surfaces
A novel digital compression scheme may make it practical to transmit detailed models of three-dimensional surfaces over the Internet.
- Physics
To pack a strand tight, make it a helix
The optimal way to pack long strings into small spaces is to coil them into helices—particularly the types of helices found in proteins and perhaps DNA.
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- Chemistry
Ribosomes Reveal Their RNA Secrets
The first atomic-resolution map of a ribosome, a cell's protein factory, suggests that RNA catalyzes the formation of proteins.
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Cleft-lip mutations may hinder virus
Having identified the mutated gene responsible for a syndrome involving cleft lip or palate, a research team finds that the recessive mutation also may confer an antiviral advantage to people who carry one copy of this gene.
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Ibuprofen cuts Alzheimer protein build-up
The common nonprescription drug ibuprofen may lessen abnormal accumulation of beta-amyloid in the brain, perhaps explaining how the drug decreases the risk of developing Alzheimer's disease.
- Earth
Wildfires spread across a parched West
Dozens of lightning-sparked wildfires seared the western United States last week, adding hundreds of thousands of acres of charred terrain to a tally that promises to make this fire season the worst in recent decades.
- Physics
Attractive atoms pick up repulsive habits
Rubidium atoms intrinsically attract each other, but new experiments near absolute zero have induced the atoms to repel each another instead.
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Depression may play a role in stroke risk
Feelings of hopelessness and other signs of major depression markedly raise a person's likelihood of suffering a stroke.
- Astronomy
Comet LINEAR: Breaking up isn’t hard to do
New images reveal that Comet LINEAR, which passed near the sun late last month, has broken into at least 10 fragments.
- Math
Prime conjecture verified to new heights
Computations show that all even integers up to 4 x 1014 can be written as the sum of two prime numbers, lending support to the Goldbach conjecture.
