Uncategorized
- Earth
How Green Are Your Travels?
This website offers a rough gauge of the carbon-dioxide emissions associated with flying around the country. Just plug in a starting point and destination and it gives you a round-trip estimate of the greenhouse-gas “footprint” of your travel. The goal is to encourage visitors to buy carbon-offsets to cover the greenhouse-gas cost of their treks. […]
- Earth
Laser printers can dirty the air
Some laser printers emit substantial amounts of potentially hazardous nanoscale particles.
- Health & Medicine
Aura origins show the way in epilepsy surgery
Epilepsy patients who experience multiple auras before a seizure, usually considered poor candidates for corrective brain surgery, might benefit from by a new brain scan procedure.
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19880
My cat has been doing for years what scientists at the University of St. Andrews reported of orangutans: motioning for healthy portions of their favorite foods. Except that four tins of cat food later, my cat is still motioning “Not that kind, wrong flavor.” Sally YoungNewport News, Va.
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Orangutans hand it to researchers
Orangutans try to communicate by gesturing when they think they're being misunderstood, much as people do when playing charades.
- Earth
Lack of oxygen stunts fish reproduction
Seasonal oxygen shortages in coastal waters, increasing in severity because of pollution, may impair fish reproduction.
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Virus thrives by hiding
Some viruses create cocoonlike refuges in the cells they invade, shielding them from the cell's defense mechanisms.
- Anthropology
Men’s fertile role in evolving long lives
The ability of men 55 and older to father children may have had evolutionary effects that caused both sexes to develop longer lifespans.
- Health & Medicine
HIV is double trouble for brain
The virus that causes AIDS can also cause dementia, by both killing mature brain cells and blocking the creation of new ones.
- Planetary Science
A different view of Uranus’ rings
The rings of Uranus are now tilted edge on to Earth, revealing small, inner rings made of fine dust.
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Genome 2.0
Detailed explorations of the human genome are showing that individual genes may have complex structures, and that much of what had been called junk DNA is not junk at all.
- Earth
What Goes Up
A massive scientific field study in Mexico City, along with lab experiments and computer simulations, show that pollution from the world's megacities has a global impact.
