Uncategorized
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19597
This article didn’t mention the effect of large-scale conversion of cellulosic biomass to fuel on disposal sites. Here in southern California, we are running out of places to dump urban waste. Taking waste to a fuel-generating facility would reduce the environmental effects and might even cost less than burying it. Bob KosterNorth Tustin, Calif. Your […]
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Living History
Bacteria and fungi living on artworks and artifacts often cause extensive damage.
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- Humans
From the September 21, 1935, issue
The opening of the Hayden planetarium in New York, heavy neon, and the age of the universe.
- Math
Math Music
Curious about the sounds of pi, the music of Fibonacci numbers, the blare of chaos, or the chimes of a DNA sequence? This interactive Web site, developed by Jonathan Middleton and his team at Eastern Washington University, provides a variety of tools for composing music based on mathematical recipes that convert sequences of numbers into […]
- Health & Medicine
Sharpening the focus of mammograms
Digital mammography can detect up to one-fourth more cancers than traditional film mammography can in women who are under 50, haven't gone through menopause, or who have dense breast tissue.
- Earth
Pack Rat Piles: Rodent rubbish provides ice age thermometer
Analyses of fossilized plant remnants collected by pack rats reveal that the Grand Canyon was much cooler than previously thought during the latter part of the last ice age.
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***Notice to Subscribers in Areas Affected by Hurricane Katrina***
The U.S. Postal Service has asked magazine publishers to suspend subscription mailings to areas that were damaged by Hurricane Katrina. Science News subscribers in those areas won't be charged for issues that are withheld, and their subscriptions will be extended. Mailings will resume upon notification by the USPS that delivery is reinstated.
- Earth
Organic Choice: Pesticides vanish from body after change in diet
Children can eliminate their bodies' loads of agricultural pesticides by eating organically grown products.
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19596
This article, as presented, doesn’t address the statement made in the headline. The article shows only that on days when no pesticides are ingested in food, no pesticides are excreted in urine. Charles WyttenbachLawrence, Kan.
- Animals
Balls of Fire: Bees carefully cook invaders to death
Honeybees that defend their colonies by killing wasps with body heat come within 5 degrees C of cooking themselves in the process.
- Earth
Dim View: Darkening skies a regional phenomenon
The decline in the solar radiation reaching Earth's surface in the latter half of the 20th century turns out to have been mostly a regional phenomenon.
