Uncategorized
- Archaeology
Cat’s Cradle? New find pushes back origin of tamed felines
Archaeological finds on the Mediterranean island of Cyprus indicate that people domesticated cats by about 9,500 years ago, long before cat taming achieved prominence in ancient Egypt.
- Physics
A New Form of Water: Melting ice turns oddly dense
The density of a recently made film of water far exceeds that of ordinary water, suggesting that the film may be the first isolated sample of a proposed form of water thought to contribute to ordinary water's odd properties.
- Humans
Sense of Smell
Get in touch with your sense of smell. This invitation comes from the Sense of Smell Institute, which aims to spotlight the importance of smell in human psychology, behavior, and quality of life. The institute’s Web site offers a report addressing what would happen if you were to lose your sense of smell. The site […]
- Health & Medicine
SARS vaccine tests well in mouse model
Scientists have developed a DNA vaccine that stops the SARS infection in mice.
- Earth
Inhaling your food—and its cooking fuel
Cooking emits easily inhaled pollutants that travel throughout a home and can linger for hours.
- Anthropology
Gene implicated in apes’ brain growth
A gene with poorly understood functions began to accumulate favorable mutations around 8 million years ago and probably contributed to brain expansion in ancient apes.
- Tech
Fluid lens flows into focus
By controlling a boundary between oil and water, researchers have created a liquid lens that can quickly alter its shape in response to electric signals.
- Health & Medicine
Papillomavirus infections spike in sunny months
Getting sun could increase vulnerability to a sexually transmitted virus that may lead to cervical cancer.
- Health & Medicine
Exercise after breast cancer extends life
After a woman survives an initial bout with breast cancer, being physically active improves her odds of beating the disease over the long term.
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19403
In this article, the photo comparison of the dam site is deceptive because the two photos of the same spot appear to have been taken during different seasons. Hence, the lower photo shows a scene that appears excessively desolate, but not because of the loss of the dam. Michael C. ReedKalamazoo, Mich.
- Earth
Tales of the Undammed
Although destroying dams is often presumed to restore rivers, the results of such action are actually mixed, according to recent studies.
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Quite a Switch
Cells use ribonucleic acids that bind to small molecules such as vitamins to control gene activity.
