From: LARRY KLAES (ljk4_at_msn.com)
Date: Sat Sep 17 2005 - 14:25:12 UTC
----- Original Message -----
From: e-letter_at_lists.sciencenews.org<mailto:e-letter_at_lists.sciencenews.org>
Sent: Saturday, September 17, 2005 12:18 AM
Subject: Science News e-Letter
Weekly e-Letter from Science News
September 17, 2005
Subject: Science News Weekly e-letter
The potential effect of global warming on hurricane intensity and frequency is the topic of this week's cover story. News articles focus on the most distant gamma-ray burst ever recorded, a recipe for nylon that eliminates a troublesome by-product, flowers that naturally fluoresce, a trio of proteins that controls when an embryonic stem cell develops into a specific tissue, and more. MathTrek presents a mathemusical potpourri.
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Despite suspension of mail service, all Science News subscribers will continue to have access to the magazine online. If you need help accessing the full online version, please call 1-800-552-4412.
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This Week's Featured Articles:
[Astronomy]
[Biology]
[Earth Science]
THIS WEEK'S ONLINE FEATURES:
[MATHTREK]
[FOOD FOR THOUGHT]
[TIMELINE]
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Week of September 17, 2005; Vol. 168, No. 12
THIS WEEK'S TABLE OF CONTENTS: http://www.sciencenews.org/articles/20050917/toc.asp References and sources for all articles are available online at www.sciencenews.org<http://www.sciencenews.org/>
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[Chemistry]
[Botany]
[Biomedicine]
[Behavior]
[Technology]
[Biomedicine]
[Physics]
[Earth Science]
[Nutrition]
[Archaeology]
[Chemistry]
[Chemistry]
[Chemistry]
[Science & Society]
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This archive was generated by hypermail 2.1.6 : Sat Sep 17 2005 - 14:26:58 UTC
Farthest Bang: A burst that goes the distance
The most-distant gamma-ray burst ever found hails from 900 million years after the birth of the universe, around the time when stars and galaxies first flooded the universe with light.
http://www.sciencenews.org/articles/20050917/fob1.asp
Forever Young: Digging for the roots of stem cells
Three proteins have been shown to function as master regulators that shut off differentiation and enable stem cells to retain their capacity to develop into any type of cell.
http://www.sciencenews.org/articles/20050917/fob6.asp
The Wind and the Fury: Has climate change made hurricanes fiercer, or are such claims hot air?
New research suggests that, as global warming proceeds, hurricane winds will gain speed and the storms will dump more rain, but controversy lingers as to how much more violent the storms will become and when they will occur.
http://www.sciencenews.org/articles/20050917/bob8.asp
A Mathemusical Potpourri
Turning numbers and mathematical ideas into musical tones comes in many flavors.
http://www.sciencenews.org/articles/20050917/mathtrek.asp
Using Light to Sense Plants' Health and Diversity
Laser scanners may help farmers better tailor when and how much to fertilize their crops, with side benefits for the environment.
http://www.sciencenews.org/articles/20050917/food.asp
>From the September 14, 1935, issue
Symmetry in electric transmission lines and the chemical composition of a male sex hormone.
http://www.sciencenews.org/articles/20050917/timeline.asp
To subscribe to Science News magazine, go to www.sciencenews.org<http://www.sciencenews.org/>
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REGISTERED SUBSCRIBERS to the print edition of Science News also have online access to the full text of the following articles:
Greener Nylon: One-pot recipe could eliminate industrial leftovers
Researchers have devised a one-step process for making the primary ingredient of nylon.
http://www.sciencenews.org/articles/20050917/fob2.asp
Day-Glo Flowers: Some bright blooms naturally fluoresce
Some common flowers fluoresce but the glow most likely has little effect on pollinators.
http://www.sciencenews.org/articles/20050917/fob3.asp
Head-to-Head Comparison: Coils top clips in brain-aneurysm treatment
Tiny platinum coils inserted into a ruptured brain aneurysm to seal off the bleeding appear safer in the long run for some patients than traditional brain surgery does.
http://www.sciencenews.org/articles/20050917/fob4.asp
Noises On, Language Off: Speech impairment linked to unsound perception
A language disorder that affects a substantial number of elementary school children arises from a difficulty in picking out basic elements of speech, such as consonants, from streams of sound.
http://www.sciencenews.org/articles/20050917/fob5.asp
Stepping Lightly: New view of how human gaits conserve energy
Using a simple mathematical model, scientists may have pinpointed the key aspects of human locomotion that make ordinary walking and running the most energy-efficient ways for people to get around on foot.
http://www.sciencenews.org/articles/20050917/fob7.asp
Oral Exams: Saliva could provide an alternative for some diagnostic tests
Scientists are taking advantage of the components in spit to develop new, saliva-based diagnostic tests.
http://www.sciencenews.org/articles/20050917/bob9.asp
Champion of strength is forged in mighty anvil
A new form of carbon created in an anvil and composed of microscopic needles of diamond has emerged as the strongest known material.
http://www.sciencenews.org/articles/20050917/note10.asp
The river's rising: A depressing effect
When the Amazon River swells in flood each rainy season, the immense weight of the water causes Earth's surface in the region to sink dozens of centimeters.
http://www.sciencenews.org/articles/20050917/note11.asp
Lead in spice mixes caused poisonings
Contaminated spices, purchased from poorly regulated sources, can explain some cases of lead poisoning that involve several members of a family.
http://www.sciencenews.org/articles/20050917/note12.asp
French site sparks Neandertal debate
Radiocarbon analyses of material from a French cave indicate that Neandertal and modern human occupations of the site overlapped around 36,000 years ago, possibly explaining why Neandertals began to employ some new toolmaking techniques around that time.
http://www.sciencenews.org/articles/20050917/note13.asp
Cactus goo purifies water
Scientists are working on an environmentally benign water-filtering process that uses the nopal cactus.
http://www.sciencenews.org/articles/20050917/note14.asp
Novel reaction produces hydrogen
Chemists have found a new way to produce hydrogen using only water, an organic liquid, and a metal catalyst.
http://www.sciencenews.org/articles/20050917/note15.asp
How hot was it?
Scientists have created heat-sensing polymers that indicate exposure to high temperatures by changing color under ultraviolet light.
http://www.sciencenews.org/articles/20050917/note16.asp
Letters from the September 17, 2005, issue of Science News
http://www.sciencenews.org/articles/20050917/letter17.asp
To subscribe to Science News magazine, go to http://www.sciencenews.org
NEW: Science News for Kids!
Go to http://www.sciencenewsforkids.org
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