From: LARRY KLAES (ljk4_at_msn.com)
Date: Fri Feb 27 2004 - 17:06:34 PST
----- Original Message -----
From: e-LETTER_at_lists.sciencenews.org<mailto:e-LETTER_at_lists.sciencenews.org>
Sent: Saturday, February 21, 2004 3:56 AM
Subject: Science News e-LETTER
WEEKLY e-LETTER from SCIENCE NEWS
February 21, 2004
Subject: Science News Weekly e-letter
The first reports on how aerobic activity boosts the brains of elderly people lead off the news. A potential technique for spotting tsunamis before they hit shore, the use of nanosponges to pick up pollutants from the soil, a possible link between breast cancer and antibiotics, and plants that appear to perform computations are among the topics of other articles in this week's issue. The cover story looks at galaxies in distress. MathTrek ventures into the game of life.
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THIS WEEK'S FEATURED ARTICLES:
[Behavior]
[Earth Science]
[Mathematics]
THIS WEEK'S ONLINE FEATURES:
[MATHTREK]
[FOOD FOR THOUGHT]
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Week of February 21, 2004; Vol. 165, No. 8
THIS WEEK'S TABLE OF CONTENTS: http://www.sciencenews.org/20040221/toc.asp References and sources for all articles are available online at www.sciencenews.org<http://www.sciencenews.org/>
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[Ecology]
[Environment]
[Behavior]
[Biomedicine]
[Biomedicine]
[Technology]
[Astronomy]
[Planetary Science]
[Biomedicine]
[Physics]
[Biomedicine]
[Physics]
[Chemistry]
[Astronomy]
[Science & Society]
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: Fri Feb 27 2004 - 17:14:22 PST
Science News is an award-winning weekly newsmagazine covering the most important research in all fields of science. Published since 1922, its 16 pages are packed with short, accurate articles that appeal to both general readers and scientists.
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Neural Aging Walks Tall: Aerobic activity fuels elderly brains, minds
Moderate amounts of regular walking improve brain function and attention in formerly sedentary seniors.
http://www.sciencenews.org/20040221/fob1.asp
Catching Waves: Ocean-surface changes may mark tsunamis
A new theoretical model that describes a tsunami's interaction with winds may explain enigmatic observations associated with the waves and could lead to a technique for spotting them long before they hit shore.
http://www.sciencenews.org/20040221/fob3.asp
Computation's New Leaf: Plants may be calculating creatures
Plants in which large numbers of simple units interact with one another appear to compute how to coordinate the actions of their cells effectively.
http://www.sciencenews.org/20040221/bob10.asp
Computing on a Cellular Scale
http://www.sciencenews.org/20040221/mathtrek.asp
Calcium Superchargers
http://www.sciencenews.org/20040221/food.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:
Bird Dilemma: More seabirds killed when boats discard fewer fish
A long-term study of great skuas shows that when fishing fleets discard less fish, birds that scavenge for waste make up for the loss by increasing attacks on other seabirds.
http://www.sciencenews.org/20040221/fob2.asp
Nanosponges: Plastic particles pick up pollutants
Nanometer-scale polymer particles can extract pollutants from contaminated soil.
http://www.sciencenews.org/20040221/fob4.asp
Monkey Love: Male marmosets think highly of sex
A new brain-imaging study in marmosets suggests that males sexually aroused by the scent of females may be thinking carefully before they mate, opposing the notion that nonhuman male mammals act purely upon a primal urge.
http://www.sciencenews.org/20040221/fob5.asp
Drug Racing: Gene tied to HIV-drug response
A genetic mutation more common in blacks than in whites increases the odds that people taking a common HIV medicine will suffer side effects that lead them to halt treatment.
http://www.sciencenews.org/20040221/fob6.asp
Pill Puzzle: Do antibiotics increase breast cancer risk?
A new study links antibiotic use to breast cancer, although it's not clear the drugs cause the disease.
http://www.sciencenews.org/20040221/fob7.asp
The rat in the hat
A compact positron-emission tomography (PET) brain scanner may make possible studies of awake rats that link brain functions and behaviors.
http://www.sciencenews.org/20040221/fob8.asp
Bare-Naked Galaxies: In cosmic slam dances, some galaxies run out of gas
A decade's worth of observations is spotlighting how the vast sea of gas surrounding a cluster of galaxies can alter the shape of a galaxy plowing through it.
http://www.sciencenews.org/20040221/bob9.asp
A view of Mars, European style
Although the Mars lander Beagle 2 is presumed dead, its mother craft, the European Space Agency's Mars Express, has transmitted its first data from a polar orbit about the Red Planet.
http://www.sciencenews.org/20040221/note11.asp
Some T cells may be a fetus' best friend
While pregnant, mice overproduce a kind of T cell that reins in other immune cells that might target the fetus.
http://www.sciencenews.org/20040221/note12.asp
New supergas debuts
A cloud of ultracold potassium atoms, manipulated by means of a magnetic field, has coalesced into a new super form of matter called a fermionic condensate.
http://www.sciencenews.org/20040221/note13.asp
Putting the brakes on toxic shock
Scientists have discovered the cascade of molecular events that underpins many cases of toxic shock syndrome.
http://www.sciencenews.org/20040221/note14.asp
Nuclear pudding--to go
Moving at nearly the speed of light, atomic nuclei hurtling through a huge particle collider may become mostly dense, flattened puddings of nuclear particles known as gluons.
http://www.sciencenews.org/20040221/note15.asp
Radical molecule could produce plastic magnets
A team of chemists has synthesized an unusual organic molecule that could lead to cheaper and lighter magnets.
http://www.sciencenews.org/20040221/note16.asp
Finding the star that was
Sifting through archival images, astronomers have identified the star whose explosive demise was recorded by telescopes last year.
http://www.sciencenews.org/20040221/note17.asp
Letters
Letters from the Feb. 21, 2004, issue of Science News.
http://www.sciencenews.org/20040221/note18.asp
To subscribe to Science News magazine, go to www.sciencenews.org<http://www.sciencenews.org/>
NEW: Science News for Kids!
Go to http://www.sciencenewsforkids.org
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