Uncategorized
- Health & Medicine
Lack of Evidence: Vaccine additive not linked to developmental problems
Thimerosal, a mercury-containing vaccine preservative, shows no signs of causing memory, attention or other problems in children.
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Bugs in Space: Genes explain why salmonella grow deadlier when freed from Earth’s gravity
Bacteria that flew on a space shuttle became deadlier than their earthbound counterparts.
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Double Trouble: Tumors have two-pronged defense
By depleting an essential amino acid and releasing a toxin, cancer cells can ward off attack by the immune system.
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Jungle Down There: What’s a kelp forest doing in the tropics?
Kelp, algae that grow in cold water, turn out to be surprisingly widespread in tropical seas.
- Health & Medicine
Keep Out: Treated mosquito nets limit child deaths
Mosquito nets treated with insecticides decrease death rates among children in Kenya's malarial zones.
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19886
This article states that Kenyan researchers report insecticide-treated bed nets can reduce malaria-related deaths in children. While these nets appear to provide preventive measures against malaria, my only concern is the toxicity of the insecticides. The World Health Organization lists two of the insecticides used on the nets, bifenthrin and permethrin, as possible human carcinogens. […]
- Paleontology
Unexpected Archive: Mammoth hair yields ancient DNA
Hair from ancient mammoths contains enough genetic material to permit reconstruction of parts of the animal's genome.
- Health & Medicine
Distracted? Tea might help your focus
An amino acid in tea combines with the brew's caffeine to enliven brain cells that aid concentration.
- Health & Medicine
Tea compound aids dying brain cells
A constituent of green tea rescues brain cells damaged in a way that mimics the effect of Parkinson's disease.
- Health & Medicine
Malaria’s sweet spot
The malaria parasite's reliance on a sugar in the gut of mosquitoes may offer a way to block the disease's transmission.
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19885
Astronomer Masanori Iye of the National Observatory of Japan blames the blurry appearance of meteor trails at about 100 kilometers altitude on the fact that they were photographed with telescopes focused at infinity. But optics teaches that any object much farther away than the focal length of the telescope is essentially “at infinity.” Wouldn’t a […]
- Astronomy
Out-of-focus find
Blurry images yield estimates of the true width of glowing meteor vapor trails in Earth's upper atmosphere.
