News
- Tech
Microdevice weds electronics, light fibers
By altering the chemical structures of dyelike molecules called chromophores, researchers have created tiny, low-voltage devices for converting electronic signals into light waves.
- Anthropology
Goat busters track domestication
People began to manage herds of wild goats at least 10,000 years ago in western Iran.
- Anthropology
Lucy on the ground with knuckles
Some early human ancestors appear to have walked on all fours using their knuckles, much as chimpanzees do.
- Planetary Science
Rocks on the ice
Pristine fragments of a meteorite that fell January 18 in the frozen Yukon and that remained frozen until they were delivered to a NASA laboratory may reveal much about the earliest days of the solar system.
- Astronomy
Black holes and their galaxies: A closer link
Supermassive black holes and the galaxies they inhabit appear to grow up together.
- Health & Medicine
From rabies virus to anti-HIV vaccine
Researchers working with mice are trying to fashion an HIV vaccine by using a weakened rabies virus to bring an HIV glycoprotein to the attention of the immune system.
-
Good guys and bad guys share tactics
A microbial odd couple—the brucellosis pathogen and a nitrogen-fixer for plants—need the same gene to settle into their hosts long-term.
-
One-gene change makes mice neurotic
Researchers have engineered a strain of stressed-out mice by knocking out one gene.
- Health & Medicine
Treating one disease caused another
Egypt's public health service inadvertently spread hepatitis C while treating patients for schistosomiasis, a common parasitic disease, with injections of antischistomal medications.
- Health & Medicine
Antacids for asthma sufferers?
People with asthma have more acidic lungs than do people who don't have the disease, a finding that may prompt the development of novel asthma treatments aimed at restoring the normal pH value of the lungs.
- Health & Medicine
Gene expression helps classify cancers
Using gene chips to study the activity of thousands of genes simultaneously, researchers showed that a common cancer of white blood cells—diffuse large B-cell lymphoma—is in fact two distinct diseases.
- Earth
More Waters Test Positive for Drugs
Traces of drugs, excreted by people and livestock, pollute surface and ground waters in the United States, as had already been confirmed in Europe.
