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July 1993
Scientific American Magazine
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Cover; July 1993; by Staff Editor; 1 Page(s)
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Masthead; July 1993; by Staff Editor; 1 Page(s)
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The Big Nada?; July 1993; by Marguerite Holloway; 2 Page(s)
Inaction may stifle the UNCED agreements
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Moonball; July 1993; by Corey S. Powell; 3 Page(s)
Astronomers beat a path
to high resolution
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Banzai!; July 1993; by W. Wayt Gibbs; 1 Page(s)
Generally, old satellites don't die; they just fade away.
Yet there are exceptions. This past spring the
Japanese Institute of Space and Astronautical Science
( ISAS) decided to send its Hitin satellite into oblivion not with a whimper but a bang.
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QED for QCD; July 1993; by Philip Yam; 2 Page(s)
A supercomputer backs the theory of quarks
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A Kinder War; July 1993; by John Horgan; 2 Page(s)
"Harm reduction" gains ground as an approach to drug abuse
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Healing Hearing; July 1993; by John Rennie; 2 Page(s)
Regrowing damaged ear cells
might eventually cure deafness
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Risk Analysis and Management; July 1993; by M. Granger Morgan; 7 Page(s)
Inadequate approaches to handling risks may result in bad policy. Fortunately, rational techniques for assessment now exist
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Viral Quasispecies; July 1993; by Manfred Eigen; 8 Page(s)
The standard definition of a biological species does not apply
to viruses. A more expansive and dynamic view of viral
populations holds clues to understanding and defeating them
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Australia's Polar Dinosaurs; July 1993; by Patricia Vickers-Rich and Thomas Hewitt Rich; 6 Page(s)
Their excellent night vision and apparent warm blood
raise a question: Could they have survived icehouse
conditions at the end of the Cretaceous period?
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Accurate Measurement of Time; July 1993; by Wayne M. Itano and Norman F. Ramsey; 8 Page(s)
Increasingly accurate clocks - now losing no more than
a second over millions of years - are leading to such advances as refined tests of relativity and improved navigation systems.
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Surgical Treatment of Cardiac Arrhythmias; July 1993; by Alden H. Harken; 7 Page(s)
To save the life of a doomed patient, the author and his colleagues
developed a now standard surgical procedure for correcting
lethally fast heartbeats in many people susceptible to them
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Fuzzy Logic; July 1993; by Bart Kosko and Satoru Isaka; 6 Page(s)
The binary logic of modern computers often falls short
when describing the vagueness of the real world.
Fuzzy logic offers more graceful alternatives
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Edwin Hubble and the Expanding Universe; July 1993; by Donald E. Osterbrock, Joel A. Gwinn and Ronald S. Brashear; 6 Page(s)
More than any other individual, he shaped
astronomers' present understanding of an expanding
universe populated by a multitude of galaxies
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Sustaining the Amazon; July 1993; by Marguerite Holloway; 9 Page(s)
Can scientists reconcile the
inevitability of economic
development with the
preservation of rain forests?
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Try, Try Again; July 1993; by W. Wayt Gibbs; 3 Page(s)
Making antibodies more useful
by making them more human
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Earcons; July 1993; by Gary Stix; 3 Page(s)
"Audification" may add
a new dimension to computers
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Putting a Spin on Parasites; July 1993; by Tim Beardsley; 1 Page(s)
Adrian Parton used to spend his days pondering molecular biology. Then, in 1991, he heard a talk given
by biophysicist Ronald Pethig of the University College of Wales, in which he described how electric fields can be used to manipulate particles.
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Keeping the Sun Shining on British Technology; July 1993; by Tim Beardsley; 2 Page(s)
Michael Faraday, on being asked by a prime minister of the day what good were his researches into electricity, is said to have answered, "Sir, one day you will tax it."
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Practical Fractal; July 1993; by W. Wayt Gibbs; 2 Page(s)
Mandelbrot's equations
compress digital images
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The Analytical Economist; July 1993; by Paul Wallich and Marguerite Holloway; 1 Page(s)
Health Care without Perverse Incentives
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Book Review; July 1993; by Gerard Piel; 4 Page(s)
Can History Stop Repeating Itself?
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