Uncategorized
- Health & Medicine
Warning Sign: River blindness parasite shows resistance
The parasitic worm that causes river blindness seems to be developing resistance to the only drug that controls it.
- Computing
Mapping a Medusa: The Internet spreads its tentacles
After tracking how digital information weaves around the world, researchers have concluded that, structurally speaking, the Internet looks like a medusa jellyfish.
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Crossing the Line: Technique could treat brain diseases
With the help of a molecule from the rabies virus, scientists have for the first time selectively ferried a drug across the blood-brain barrier to treat a neurological disease in mice.
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19846
This article describes attaching a drug molecule to a molecule from the rabies virus that enables the drug to cross the blood-brain barrier. This suggests a possible danger if the ability to produce the molecule could be transferred to the genomes of disease organisms in the wild. If the field of genetic engineering for drug […]
- Health & Medicine
Fluorine highlights early tumors
Microscopic, fluorine-packed particles can make small, cancerous growths easier to detect.
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New player in cancer risk
RNA snippets of a newly discovered type could be involved in the mechanisms of cancer.
- Animals
Clownfish noisemaker is new to science
Clownfish make "pop-pop-pop" noises at each other by clacking their teeth together in a novel way.
- Materials Science
Heal thyself—again and again
A new self-healing material can repeatedly repair damage at the same spot.
- Earth
Tree rings tell tale of megadroughts
Tree rings in ancient timber show that the Colorado Plateau experienced a 60-year drought in the 12th century.
- Animals
Moths mimic ‘Don’t eat me’ sounds
Moths that make clicking noises at predatory bats are mimicking a defensive signal made by other moths that click and also taste bad.
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19845
In this article, the study is reported as the “first confirmed acoustic example of classic defensive mimicry.” Not so. In 1986, Matthew P. Rowe and colleagues published in Ethology an elegant study demonstrating that the burrowing owl’s hiss is acoustic defensive mimicry of the rattlesnake’s rattle. William K. HayesLoma Linda UniversityLoma Linda, Calif.
- Archaeology
Ancient beads found in northern Africa
Perforated shells found in a Moroccan cave indicate that northern Africans made symbolic body ornaments 82,000 years ago, long before Europeans did.
