Uncategorized
- Physics
Some swell materials give up their secret
The discovery of a previously overlooked crystal structure in the best so-called piezoelectric materials may explain their remarkable amount of swelling when zapped by an electric field.
- Health & Medicine
Narcoleptic dogs still have their day
Evidence from studies with dachshunds and poodles is suggesting that these small breeds may serve as better models than larger dogs, such as Labrador retrievers, for the more genetically complex narcolepsy in people.
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Chemical SOS not just for farm, lab plants
The chemical screams for help that scientists have detected from agricultural plants under attack by pests in lab settings have now been heard in the wild.
- Earth
Satellites verify greenhouse-gas effects
Comparisons of data obtained from instruments that orbited Earth more than 25 years apart provide direct evidence that the planet's greenhouse effect increased significantly between 1970 and 1997.
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18908
In the March 17 issue, there was an article about arsenic pollution disrupting hormone activity (“Arsenic pollution disrupts hormones”) and another article concerned with satellite verification of greenhouse-gas effects from increased levels of carbon dioxide and methane (“Satellites verify greenhouse-gas effects”). Ironically, that same week, President Bush recommended that more stringent arsenic standards be set […]
- Humans
Science Talent Search winners shine bright
Science Service and Intel announced the winners of the 2001 Science Talent Search.
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Repression tries for experimental comeback
A laboratory experiment finds that people have difficulty remembering words that they have intentionally tried to forget, providing support for Sigmund Freud's controversial concept of repression.
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Arsenic Pollution Disrupts Hormones
Researchers have found that arsenic thwarts the action of glucocorticoid hormones, suggesting a possible explanation of how long-term exposure to the metal in drinking water could cause cancer, diabetes, and other chronic diseases.
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18910
In the March 17 issue, there was an article about arsenic pollution disrupting hormone activity (“Arsenic pollution disrupts hormones”) and another article concerned with satellite verification of greenhouse-gas effects from increased levels of carbon dioxide and methane (“Satellites verify greenhouse-gas effects”). Ironically, that same week, President Bush recommended that more stringent arsenic standards be set […]
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Phew! Orchid perfume turns revolting
Orchids that can smell so alluring that bees try to mate with them can also smell repulsive to the insects.
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Consumer survey: Caged mink value water
Even after 70 generations in captivity, caged American mink still seem to miss the swimming they would do in the wild.
- Materials Science
Crystals step up to a new surface
Researchers have made crystals that reversibly change their surface shape when hit by light.
