News
- Physics
Sunlight Sponge? Energy trackers gauge water vapor’s wild dance
Atmospheric water vapor takes in more solar radiation than has been indicated by measurements and models, but laser probes of highly agitated water molecules suggest that the vapor doesn't absorb enough radiation to explain the discrepancy fully.
- Ecosystems
Pfiesteria’s Bite: Microbe may kill fish by skinning, not poisoning
At least one kind of Pfiesteria—accused of killing fish and threatening human health—does not produce a toxin but kills by eating holes in fish's skin, some researchers say.
- Health & Medicine
Fullness Factor: Gut hormone tells brain the stomach is well fed
A hormone produced by the intestines could be the primary satiety signal sent to the brain.
- Astronomy
Visible Matter: Once lost but now found
New observations confirm that most of the visible matter in the universe lies hidden in vast, hard-to-detect gas clouds between galaxies.
- Plants
Recent tree scourge poses garden threat
Lab tests suggest that a lethal disease of oak trees in California and Oregon could strike some popular garden shrubs in the rhododendron family.
- Plants
Disease outpacing control in largest chestnut patch left
An unusual test of a biological control for the blight that's killing American chestnuts doesn't look good in the largest remaining patch.
-
Speech loses beat in dyslexia
The severe reading disorder known as dyslexia may involve an inability to perceive a critical rhythmic beat that separates parts of spoken words.
- Health & Medicine
Ulcer bug linked to stroke
Potent strains of an ulcer-causing bacterium may also trigger strokes.
- Health & Medicine
Lab tool may spawn new antiviral drugs
Short strands of RNA can be used to stop viruses such as HIV.
- Health & Medicine
Breast-feeding has protective bonus
Breast-feeding appears to help ward off breast cancer.
- Materials Science
New gel could lead to cartilage repair
A new scaffold material that contains cartilage cells and encourages their growth could help scientists create living tissue replacements suitable for treating osteoarthritis and sports injuries.
- Animals
Hyena androgens exact high cost
Blocking androgens for spotted hyenas before they're born shows that the exposure of a female fetus to male hormones normally takes a heavy physical toll when females bear their own pups.
