Uncategorized
- Earth
Salmon puzzle: Why did males turn female?
Most of the spawning female Chinook salmon in one part of the Columbia River appear to have started life as males.
- Planetary Science
Ganymede May Have Vast Hidden Ocean
A combination of images, spectra, and magnetic field measurements suggests that in addition to Jupiter's moon Europa, another Jovian moon, Ganymede, may also have had—and might still harbor—an ocean.
- Archaeology
Pompeii’s burial not its first disaster
Recent excavations reveal that the city of Pompeii, famed for its burial by an eruption of Italy's Mt. Vesuvius in A.D. 79, experienced several devastating landslides in the centuries preceding its demise.
- Earth
Dead zones may record river floods
Microorganisms that live in seafloor sediments deposited beneath periodically anoxic waters near the mouths of rivers could chronicle the years when those rivers flooded for extended periods.
- Physics
Letters from the November 27, 2004, issue of Science News
Dark Secrets Astronomers and physicists seem to speak of black holes as though they took matter completely out of the universe (“Information, Please,” SN: 9/25/04, p. 202: Information, Please). An evaporating black hole would not fizz away into nothingness. It would lose energy and reappear in normal space as a very dense object (complete with […]
- Earth
Lead’s a moving target at rifle ranges
The lead used in bullets and shotgun pellets can be a threat to the environment near rifle ranges but many of its hazards are manageable.
- Physics
Spinning Earth drags space
Slight deviations of two Earth-circling satellites from their expected orbits appear to confirm a curious prediction from Einstein's relativity theory.
- Chemistry
Cleaning up anthrax
Chemists have developed catalysts that spur common oxidants to quickly destroy germs, including deadly anthrax spores.
- Paleontology
Flightless Feathered Friends
New finds of fossil penguins, as well as analyses of the characteristics and DNA of living penguins, are shedding light on the evolution of these flightless birds.
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19484
The study in this article is missing the boat. They should use families that have eliminated asthma triggers without medications. In our safe, chemical-free home, we have been able to protect our health. Avoiding asthma triggers has resulted in one son being cured of asthma and my other son and I being under control with […]
- Health & Medicine
Asthma Counterattack
After several experimental attempts, researchers finally have verified that fighting allergens in the household can reduce symptoms of asthma.
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