Uncategorized
- Health & Medicine
Damage Patrol: Enzyme may reveal cancer susceptibility
People with lung cancer show less DNA-repair activity by a certain enzyme than people without the disease do.
- Physics
Fusion Boost: Promising path to heavy nuclei
By using radioactive nuclei as projectiles in accelerator-based nuclear collisions, scientists may be able to produce more readily than expected many exotic heavy nuclei that are impossible to make today but are crucial for future advances in nuclear physics.
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There is a striking similarity in the wave patterns of the ash plume on the cover of the Sept. 13 issue (above) and those in the gas of the Perseus Cluster pictured in this article. Could it be that volcanoes produce sound waves we can’t hear but can see in the plume? Paul HeinsGainesville, Fla. […]
- Astronomy
A Low Note in Cosmos: Sounding out a new role for black holes
Astronomers have for the first time detected sound waves generated by a black hole.
- Health & Medicine
Control of animal epidemic slowed human illness
Control measures implemented in response to the devastating animal epidemic of foot-and-mouth disease can apparently help curtail the spread of the cryptosporidium parasite, which sickens people.
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I read this article with interest. Can you tell me what contributes to these deposits in arteries? Julie WinslettDahlonega, Ga. It’s not ingestion of calcium, at least in people with normal kidney function, says Paolo Raggi of Tulane University in New Orleans. Rather, the condition stems from damage to vessel walls wrought by high blood […]
- Health & Medicine
Coronary calcium may predict death risk
The amount of calcium in the coronary arteries can serve as a risk marker for people who are otherwise without heart disease symptoms.
- Earth
New mantle model gets the water out
A novel notion of geophysical processes taking place deep within our planet may explain why the upper layer of Earth's mantle is relatively depleted of many trace elements.
- Astronomy
Solar system replica?
Carefully monitoring the motion of a star 90 light-years from Earth, astronomers have found what may be the closest analog known to our solar system.
- Health & Medicine
Grades slipping? Check for snoring
Children who snore frequently are more likely to struggle with their schoolwork than are children who rarely snore.
- Paleontology
Fossils’ ear design hints at aquatic lifestyle
New studies of distinctive skull structures in fossils of one of Earth's earliest-known four-limbed creatures suggest the animal could hear best when it was underwater.
- Chemistry
Secret of strong silk
By controlling the amount of water in their glands, spiders and silkworms prevent their silk proteins from crystallizing prematurely.
