News
- Earth
Finding fault for an old earthquake
Scientists in Southern California believe they've found evidence that finally identifies the source of one of the region's largest quakes, a magnitude 7-plus temblor that struck the area on Dec. 21, 1812.
- Earth
Satellites could help track sea level
Experiments that used signals from Global Positioning System satellites to precisely measure altitude above a lake's surface may pave the way for fleets of spaceborne sensors that can quickly and inexpensively monitor local and global changes in sea level.
- Health & Medicine
Rwandan patients show unusual HIV
Blood tests on people in Rwanda who have had HIV infections for years without symptoms of AIDS indicate that the viruses in these patients have rare mutations.
- Health & Medicine
Will new approach cure Chagas disease?
Scientists may be able to disable the parasite that causes Chagas disease by targeting the enzyme it uses to make essential fats.
- Health & Medicine
Suppressive drug therapy hinders herpes
A daily regimen of the antiviral drug valacyclovir controls genital herpes vastly better than does the same medication when used only to treat outbreaks of the disease.
- Health & Medicine
Ominous drug-resistance hints appear
The first signs of partial resistance to an important class of drugs called quinolones have appeared in Haemophilus influenzae, a bacterium that can cause pneumonia and meningitis.
- Earth
Bolts from the blue can have long reach
Current U.S. Air Force operating procedures recommend personnel stop working outdoors when lightning is spotted within 5 nautical miles, but a new analysis suggests that this distance may not be adequate to fully protect aircraft and ground crews.
- Earth
Southeastern Alaska is on the rebound
Scientists using the Global Positioning System to track ground movement along faults in southeastern Alaska have measured something entirely different—the rapid rise of parts of the region due to the recent melting of glaciers.
- Earth
Global warming to boost cotton yields
The increase of carbon dioxide expected in the coming decades may boost cotton yields up to 26 percent, new models predict.
- Earth
Toxic metals taint ancient dust
A new study of dust lofted to Antarctica suggests that excess amounts of trace metals coated dust grains long before human industrial activity began loading the atmosphere with pollutants.
- Earth
Turbulence leads to early rain of ash
A new aerodynamic analysis suggests that chaotic turbulence in a high-altitude cloud of volcanic ash can cause small particles of the ash to clump together and fall to the ground much closer to the volcano than expected.
- Health & Medicine
Garlic interferes with HIV drug
Garlic supplements interact negatively with a protease inhibitor medication taken by people infected with HIV.
