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February 1993
Scientific American Magazine
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Cover; February 1993; by Staff Editor; 1 Page(s)
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Masthead; February 1993; by Staff Editor; 1 Page(s)
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Livable Planets; February 1993; by Corey S. Powell; 2 Page(s)
Calculations raise the odds for finding life in the cosmos
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What If They Don't Have Radios?; February 1993; by John Horgan; 1 Page(s)
Are mathematical theorems and theories of physics universal truths, likely to be discovered by any beings given to pondering the nature of things?
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COBE Corroborated; February 1993; by John Horgan; 1 Page(s)
Balloon observations support satellite data
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Genes and Crime; February 1993; by John Horgan; 3 Page(s)
A U.S. plan to reduce violence
rekindles an old controversy
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Faux Fullerenes; February 1993; by Philip E. Ross; 1 Page(s)
Like a newly learned word that seems to jump from
every book, molecular cages have become ubiquitous since the existence of buckminsterfullerene's
icosahedral carbon cage was confirmed two years ago.
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The Artist, the Physicist and the Waterfall; February 1993; by John Horgan; 1 Page(s)
Roger Penrose, now a professor at the University of Oxford, was a 23 year old graduate student when he encountered the geometric art of Maurits C. Escher at a mathematics conference in Amsterdam in 1954.
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Electronic Envelopes?; February 1993; by Paul Wallich; 2 Page(s)
The uncertainty
of keeping e-mail private
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Making Waves; February 1993; by Tim Beardsley; 1 Page(s)
As the principals in the cold war slowly dismantle their land based missiles, submarine based ballistic missiles are assuming greater importance as ultimate deterrents.
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Environmental Change and Violent Conflict; February 1993; by Thomas F. Homer-Dixon, Jeffrey H. Boutwell and George W. Rathjens; 8 Page(s)
Growing scarcities of renewable
resources can contribute to social
instability and civil strife
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Resistance in High-Temperature Superconductors; February 1993; by David J. Bishop, Peter L. Gammel and David A. Huse; 8 Page(s)
Researchers are beginning to see how
the motion of magnetic vortices in these materials
can interfere with the flow of current
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Zinc Fingers; February 1993; by Daniela Rhodes and Aaron Klug; 8 Page(s)
They play a key part in regulating the activity
of genes in many species, from yeast to humans.
Fewer than 10 years ago no one knew they existed
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How Should Chemists Think?; February 1993; by Roald Hoffmann; 8 Page(s)
Chemists can create natural molecules by
unnatural means. Or they can make beautiful structures
never seen before. Which should be their grail?
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A Technology of Kinetic Art; February 1993; by George Rickey; 6 Page(s)
Delicate interplay of weights and balances
choreographs the author's sculptures so that the
gentlest gusts of air set their parts in motion
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Breaching the Blood-Brain Barrier; February 1993; by Elaine Tuomanen; 5 Page(s)
Development of a therapy for meningitis has revealed
how bacteria penetrate the blood-brain barrier. This knowledge may help physicians treat other disorders of the brain
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Redeeming Charles Babbage's Mechanical Computer; February 1993; by Doron D. Swade; 6 Page(s)
A successful effort to build a working, three-ton
Babbage calculating engine suggests that history
has misjudged the pioneer of automatic computing
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Selling to Survive; February 1993; by Tim Beardsley; 9 Page(s)
Researchers in the Russian Federation are in desperate straits. Plummeting budgets and pitiful salaries are driving many to leave the country. Those who stay are being forced to become merchant adventurers.
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Zip Code Breakers; February 1993; by Gary Stix; 2 Page(s)
The Postal Service automates
the reading of chicken scratch
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Surreal Science; February 1993; by Philip Yam; 2 Page(s)
Virtual reality finds a
place in the classroom
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Learning Companies; February 1993; by Elizabeth Corcoran; 4 Page(s)
Educating corporations about how people learn.
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Lightning Lure; February 1993; by Tom Koppel; 1 Page(s)
In February 1992 a lightning strike triggered an automatic shutdown of the 460,000-kilowatt Shimane Number One Reactor of the Central Japan Power Company.
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Shell Shocked; February 1993; by Gary Stix; 1 Page(s)
Nuts may inspire
materials designers
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Book Review; February 1993; by Nathan Keyfitz; 5 Page(s)
How to preserve the planet when human activity is a major force
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