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March 1993
Scientific American Magazine
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Cover; March 1993; by Staff Editor; 1 Page(s)
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Masthead; March 1993; by Staff Editor; 1 Page(s)
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Antarctic Meltdown; March 1993; by John Horgan; 5 Page(s)
The frozen continent's ice cap is not as permanent as it looks
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Lethal Cascade; March 1993; by Marguerite Holloway; 3 Page(s)
A model for the neurologic damage found in AIDS
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Noah's Freezer; March 1993; by John Rennie; 1 Page(s)
When Gregory Benford heard biologists discussing the rates at which species are disappearing, he was struck by the resignation in their voices.
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Young Suns; March 1993; by Corey S. Powell; 2 Page(s)
Telescope technology pulls the veil from infant stars
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Quark Quest; March 1993; by Russell Ruthen; 2 Page(s)
Have all six flavors finally been observed?
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Why America's Bridges are Crumbling; March 1993; by Kenneth F. Dunker and Basile G. Rabbat; 7 Page(s)
Inadequate maintenance has piled up a repair
bill that will take decades to pay off. Indeed, the scope
of the problem is only now becoming clear
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Black Holes and the Centrifugal Force Paradox; March 1993; by Marek Artur Abramowicz; 6 Page(s)
An object orbiting close to a black hole feels a centrifugal force
pushing inward rather than outward. This paradoxical
effect has important implications for astrophysics
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Teaching the Immune System to Fight Cancer; March 1993; by Thierry Boon; 8 Page(s)
Certain molecules on tumors can serve as targets for attack by cells of the immune system. These tumor-rejection antigens may provide a basis for precisely targeted anticancer therapy
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Flat Panel Displays; March 1993; by Steven W. Depp and Webster E. Howard; 6 Page(s)
Recent advances in microelectronics
and liquid crystals make possible video screens
that can be hung on a wall or worn on a wrist.
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How Parasitic Wasps Find Their Hosts; March 1993; by James H. Tumlinson, W. Joe Lewis and Louise E. M. Vet; 6 Page(s)
Besides recognizing odors from their caterpillar hosts,
wasps also learn to identify compounds released
by the plant on which the caterpillars feed
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Ice Age Lamps; March 1993; by Sophie A. de Beaune and Randall White; 6 Page(s)
The invention of fat-burning lamps toward the end
of the Ice Age helped to transform European culture.
It coincided with several other major technological advances
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Flooded Forests of the Amazon; March 1993; by Michael Goulding; 7 Page(s)
Parts of the vast rain forest are as much aquatic as terrestrial ecosystems. Unique adaptations allow creatures to thrive in these inundated woods
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DNA'S New Twists; March 1993; by John Rennie; 9 Page(s)
The known rules of genetics are only the beginning. The newly discovered abilities of a familiar molecule are influencing theories about evolution and the inheritance of disease.
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Back to Basics; March 1993; by W. Wayt Gibbs; 3 Page(s)
Mapping malaria's genome
may help produce a vaccine
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Preventing the Preventable; March 1993; by W. Wayt Gibbs; 1 Page(s)
An alarming 1991 survey by the Centers for Disease Control found that less than half of school-age children in nine major U.S. cities had been fully vaccinated against infectious diseases by their second birthday.
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No Snake Oil Here; March 1993; by John Rennie; 2 Page(s)
But researchers are finding drugs in frogs, moths, sharks....
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High on Gravity; March 1993; by Philip Yam; 2 Page(s)
Increasing the g's grows crystals with few defects
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Headsets; March 1993; by Gary Stix and Tom Koppel; 1 Page(s)
Television goggles are the vision of the future
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The Analytical Economist; March 1993; by Paul Wallich and Marguerite Holloway; 1 Page(s)
More Profitable to Give Than to Receive?
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Book Review; March 1993; by Robert M. May; 4 Page(s)
"How much force does it take to break the crucible of evolution?"
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