From: LARRY KLAES (ljk4_at_msn.com)
Date: Sat Feb 14 2004 - 07:23:03 PST
>From: e-LETTER_at_lists.sciencenews.org
>Subject: Science News e-LETTER
>Date: 14 Feb 2004 00:55:38 -0800
>
>WEEKLY e-LETTER from SCIENCE NEWS
>February 14, 2004
>Subject: Science News Weekly e-letter
>
>The first test-tube cloning of a human embryo to the stage at which it can
>yield stem cells leads off this week's news stories. Other articles focus
>on a DNA strand that folds into an octahedron, fossil evidence that winged
>insects may have emerged as early as 400 million years ago, the discovery
>that M&Ms randomly pack more tightly than spheres do, and more. The cover
>story looks at the remarkable memory skill of birds in relocating seed
>caches. MathTrek hunts for the mathematical constant e.
>
>
>==================================
>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.
>----------------------------------
>To subscribe to Science News magazine, go to www.sciencenews.org
>***************************
>NEW: Science News for Kids
>Go to http://www.sciencenewsforkids.org
>==================================
>
>THIS WEEK'S FEATURED ARTICLES:
>
>[Biology]
>Tailoring Therapies: Cloned human embryo provides stem cells
>Scientists have for the first time carried test-tube cloning of a human
>embryo to the stage at which it can yield stem cells.
>http://www.sciencenews.org/20040214/fob1.asp
>
>[Physics]
>Candy Science: M&Ms pack more tightly than spheres
>Squashed or stretched versions of spheres snuggle together more tightly
>than randomly packed spheres do.
>http://www.sciencenews.org/20040214/fob7.asp
>
>[Zoology]
>Where'd I Put That? Maybe it takes a bird brain to find the car keys
>Birds that hide and recover thousands of separate caches of seeds have
>become a model for investigating how animals' minds work.
>http://www.sciencenews.org/20040214/bob8.asp
>
>THIS WEEK'S ONLINE FEATURES:
>
>[MATHTREK]
>Hunting e
>http://www.sciencenews.org/20040214/mathtrek.asp
>
>[FOOD FOR THOUGHT]
>Calcium Superchargers
>http://www.sciencenews.org/20040214/food.asp
>
>----------------------------------
>To subscribe to Science News magazine, go to www.sciencenews.org
>----------------------------------
>
>Week of February 14, 2004; Vol. 165, No. 7
>
>THIS WEEK'S TABLE OF CONTENTS: http://www.sciencenews.org/20040214/toc.asp
>
>References and sources for all articles are available online at
>www.sciencenews.org
>
>***********************************
>REGISTERED SUBSCRIBERS to the print edition of Science News also have
>online access to the full text of the following articles:
>
>[Technology]
>Snappy DNA: Long strand folds into octahedron
>By harnessing the self-assembling properties of DNA, researchers coerced a
>single strand of the genetic material to assume the shape of an octahedron.
>http://www.sciencenews.org/20040214/fob2.asp
>
>[Paleontology]
>Early Flight? Winged insects appear surprisingly ancient
>New analyses of a fossil suggest that winged insects may have emerged as
>early as 400 million years ago.
>http://www.sciencenews.org/20040214/fob3.asp
>
>[Biomedicine]
>Pregnancy Alert: Proteins may predict preeclampsia
>Blood concentrations of two proteins that affect blood vessel growth appear
>to foretell the pregnancy condition known as preeclampsia.
>http://www.sciencenews.org/20040214/fob4.asp
>
>[Anthropology]
>Some Primates' Sheltered Lives: Baboons, chimps enter the realm of cave
>In separate studies, researchers have gathered the first systematic
>evidence showing that baboons and chimpanzees regularly use caves, a
>behavior many anthropologists have attributed only to people and our direct
>ancestors.
>http://www.sciencenews.org/20040214/fob5.asp
>
>[Zoology]
>Flesh Eaters: Bees that strip carrion also take wasp young
>A South American bee that ignores flowers and collects carrion from
>carcasses has an unexpected taste for live, abandoned wasp young.
>http://www.sciencenews.org/20040214/fob6.asp
>
>[Biology]
>Code Breakers: Scientists tease out the secrets of proteins that DNA wraps
>around
>Chemical tags applied to proteins that DNA wraps around regulate genetic
>activity.
>http://www.sciencenews.org/20040214/bob9.asp
>
>[Technology]
>Diagnosing the Developing World: Turning high-tech innovations into
>low-cost medical tests
>Researchers are learning how to adapt sophisticated technologies to meet
>the health-care needs of the developing world.
>http://www.sciencenews.org/20040214/bob10.asp
>
>[Biology]
>Bacteria do the twist
>A newly identified bacterial protein generates the sinuous shapes of some
>bacteria.
>http://www.sciencenews.org/20040214/note11.asp
>
>[Astronomy]
>Poof goes an atmosphere
>Blasted by the heat and radiation from its parent star, a planet 150
>light-years from Earth is literally blowing off its atmosphere.
>http://www.sciencenews.org/20040214/note12.asp
>
>[Behavior]
>Monkeys heed neural calls of the wild
>A part of the brain that's involved in sound processing shows pronounced
>activity when rhesus monkeys hear their comrades vocalizing but not when
>the same animals hear other sounds.
>http://www.sciencenews.org/20040214/note13.asp
>
>[Biomedicine]
>Virus might explain respiratory ailments
>Human metapneumovirus, first isolated in 2001, is present in many
>respiratory infections that had previously gone unexplained.
>http://www.sciencenews.org/20040214/note14.asp
>
>[Zoology]
>How blind mole rats find their way home
>The blind mole rat is the first animal discovered to navigate by combining
>dead reckoning with a magnetic compass.
>http://www.sciencenews.org/20040214/note15.asp
>
>[Earth Science]
>Ancient whalers altered arctic lakes
>Analyses of sediment and water samples taken from an arctic lake indicate
>that an ancient whaling community left a mark on the lake’s ecosystem that
>persists today, even though the settlement was abandoned more than 400
>years ago.
>http://www.sciencenews.org/20040214/note16.asp
>
>[Anthropology]
>European find gets Stone Age date
>A new radiocarbon analysis indicates that a skeleton found more than a
>century ago in an Italian cave dates to around 26,400 to 23,200 years ago.
>http://www.sciencenews.org/20040214/note17.asp
>
>[Science & Society]
>Letters
>Letters from the Feb. 14, 2004, issue of Science News.
>http://www.sciencenews.org/20040214/note18.asp
>
>----------------------------------
>To subscribe to Science News magazine, go to www.sciencenews.org
>
>***************************
>NEW: Science News for Kids!
>Go to http://www.sciencenewsforkids.org
>==================================
>
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>
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>
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>==================================
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