March 1994
Scientific American Magazine

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Cover; March 1994; by Staff Editor; 1 Page(s)

Table of Contents; March 1994; by Staff Editor; 2 Page(s)

Masthead; March 1994; by Staff Editor; 1 Page(s)

Letters to the Editors; March 1994; by Staff Editor; 1 Page(s)

50 and 100 Year Ago; March 1994; by Staff Editor; 1 Page(s)

Image Enhancement; March 1994; by Beardsley; 3 Page(s)

Hubble repairs create euphoria and burnish NASA's reputation

Chaotic Chaos; March 1994; by Yam; 1 Page(s)

Students of chaos have clung to the notion that chaotic systems retain some shreds of order.

Down the Green; March 1994; by Leutwyler; 2 Page(s)

As Ras grabs headlines, workers find a short signaling pathway

Spinning Out; March 1994; by Mukerjee; 2 Page(s)

Physicists cannot agree on the origin of proton spin

Molecular Mischief; March 1994; by Beardsley; 2 Page(s)

Spectroscopic studies may point to a cause of schizophrenia

Gene Rich, Cash Poor; March 1994; by Rennie; 2 Page(s)

The genome project has plenty of findings but not dollars

Cold Confusion; March 1994; by Powell; 3 Page(s)

Assault on the link between CO 2 and global climate

Fermat's Theorem Fights Back; March 1994; by Horgan; 1 Page(s)

"Problems worthy of attack," quoth the physicist-poet Piet Hein, "prove their worth by hitting back."

Profile: Subrahmanyan Chandrasekhar; March 1994; by Horgan; 2 Page(s)

Confronting the Final Limit

Can the Growing Human Population Feed Itself?; March 1994; by Bongaarts; 7 Page(s)

As human numbers surge toward 10 billion, some experts are alarmed, others optimistic. Who is right?

The Earth's Mantle Below The Oceans; March 1994; by Bonatti; 8 Page(s)

Samples collected from the ocean floor reveal how the mantles convective forces shape the earths surface, create its crust and perhaps even affect its rotation

Targeted Gene Replacement; March 1994; by Capecchi; 8 Page(s)

Researchers can now create mice bearing any chosen mutations in any known gene. The technology is revolutionizing the study of mammalian biology

High-Speed Silicon-Germanium Electronics; March 1994; by Myerson; 6 Page(s)

The author has helped create electronic devices that outperform traditional silicon technology yet remain compatible with standard manufacturing methods

The Quantum Physics of Time Travel; March 1994; by Deutsch, Lockwood; 7 Page(s)

Common sense may rule out such excursions - but the laws of physics do not

The Dynamics of Social Dilemmas; March 1994; by Glance, Huberman; 6 Page(s)

Individuals in groups must often choose between acting selfishly or cooperating for the common good. Social models explain how group cooperation arises - and why that behavior can suddenly change

Frogs and Toads in Deserts; March 1994; by McClanahan, Ruibal, Shoemaker; 7 Page(s)

Amphibians seem unlikely desert denizens. But those living in dry climes reveal a diverse and unusual array of adaptations to life at the extremes

Wire Pirates; March 1994; by Wallich; 9 Page(s)

Consumers and entrepreneurs crowd onto the information highway, where electronic bandits and other hazards await them

Making Money; March 1994; by Stix; 3 Page(s)

Desktop counterfeiting may keep the feds hopping

Inside Story; March 1994; by Gibbs; 2 Page(s)

Doctors like to look inside things. So do scientists and engineers.

The Last Frontier; March 1994; by Stix; 2 Page(s)

Researchers explore fiber's outer reaches

King Cotton; March 1994; by Gibbs; 2 Page(s)

W. R. Grace now controls all transgenic cotton in the U.S.

Biocatalysts Turn Rings around the Competition; March 1994; by Rennie; 1 Page(s)

When the going gets tough, the tough turn to biology. That is what a number of chemists are doing in an effort to solve some extremely difficult problems in chemical synthesis.

Prosthetic Vision; March 1994; by Leutwyler; 1 Page(s)

Workers resume the quest for a seeing-eye device

The Aanlytical Economist; March 1994; by Stix, Wallach; 1 Page(s)

Is Bigger Still Better?

Mathematical Recreations; March 1994; by Stewart; 4 Page(s)

The New Merology of Beastly Numbers

Book Reviews; March 1994; by Morrison; 5 Page(s)

Reviews

Essay: The Professor, the University and Industry; March 1994; by Zolla-Pazner; 1 Page(s)

It used to be easy to be a professor. You would read your professional journals, write your scientific papers, teach and give seminars.