News
- Earth
Diesels: NO rises with altitude
The combustion chemistry of heavy-duty diesel trucks changes with altitude.
- Earth
Passive smoking’s carcinogenic traces
Researchers isolated markers of a cigarette-generated carcinogen in urine of nonsmoking women married to smokers.
- Health & Medicine
Fatty plaques are unstable in vessels
Fatty plaques that form on the inside of blood vessels are less stable and hence more prone to rupture than are hard, calcified plaques.
- Health & Medicine
Parkinson’s implants survive in brain
Human embryonic stem cells transplanted into the brains of people with Parkinson's disease survive and grow better in patients under 60 years of age than in older patients.
- Astronomy
Creating a warmer, wetter Mars
A new study adds to the evidence that past volcanic activity could have temporarily created a warmer, wetter Mars, a place on which water once flowed freely.
- Health & Medicine
Drug helps against certain breast cancers
In some patients, the drug trastuzumab, also called Herceptin, slows breast cancer that has spread to other organs.
- 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.
- 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.
