Uncategorized
- Archaeology
Ancient rains made Sahara livable
New evidence indicates that seasonal rainfall more than 7,000 years ago turned Africa's eastern Sahara desert into a savannalike area that attracted an influx of foraging groups.
- Humans
Preserving Paradise
President Bush has created the world's largest marine reserve, a no-fishing, no-disturbance zone, surrounding the northwestern Hawaiian Islands.
- Humans
Books for Late Summer
The writers of Science News present wide-ranging recommendations of books for readers to pack for their late-summer vacations.
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Cool Science for Kids
This Web site, produced by the Howard Hughes Medical Institute, provides hands-on science activities for elementary-school students. It uses animation, sound, quizzes, and other techniques to encourage kids to explore biology. Activities include building a model of a butterfly emerging from a cocoon and identifying which parts of plants belong in the family salad bowl. […]
- Health & Medicine
Freeing Up the Flow: Clearing neck-artery blockage diminishes signs of depression in elderly
Propping open a clogged carotid artery may ease symptoms of depression in elderly people.
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Old Mice and Men: Species share genetic markers of aging
The amounts of protein produced by a particular set of genes could give researchers clues to how much a person or another animal has aged.
- Planetary Science
Jovian storms of surpassing beauty
A new near-infrared image of two giant, oval storms in Jupiter's southern hemisphere reveals that they are now brushing past each other closely, separated by only 3,000 kilometers.
- Health & Medicine
Side Effect Revealed: Heart risk found in leukemia drug
The remarkably successful cancer drug imatinib might cause heart failure in some patients.
- Materials Science
Solid Information: Chemical composition can determine concrete’s durability
A new analysis reveals how damage progresses in concrete that's exposed to sulfate.
- Computing
Hairy Calculations: Picturing tresses in a truer light
Hard-to-simulate blond hair may look more natural in future animations thanks to a new computer model that allows for hairs' transparency and includes the illumination produced by light propagating from hair to hair.
