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Plant Life in a CO2-Rich World

Even without considerations of global warming, increasing atmospheric levels of carbon dioxide may greatly alter the structure and function of ecosystems. These changes will not necessarily benefit plants...

By Eric D. Fajer and Fakhri A. Bazzaz

Quantum Chaos

Does chaos lurk in the smooth, wavelike quantum world? Recent work shows that the answer is yes-symptoms of chaos enter even into the wave patterns associated with atomic energy levels

By Martin C. Gutzwiller

How Cells Absorb Glucose

Glucose, a crucial nutrient, must enter cells with the aid of a special transporter. Recent research elucidates the structure and function of the transporter and how insulin regulates it...

By David E. James, Gustav E. Lienhard, Jan W. Slot and Mike M. Mueckler

Accretion Disks in Interacting Binary Stars

Disks of matter naturally organize themselves around objects ranging from newborn stars to quasars. An unusual class of variable

By John K. Cannizzo and Ronald H. Kaitchuck

How Sea Turtles Navigate

As soon as they hatch, sea turtles swim across hundreds of miles of featureless ocean; as adults, they navigate home to nest. Research has begun to identify the biological compasses and maps that guide them...

By Kenneth J. Lohmann

Tribal Warfare

Contact between Europeans and Native Americans may have shattered a delicate social balance that had existed among local tribes. One result was widespread violence

By R. Brian Ferguson

Lightwave Communications: The Fifth Generation

Optical fibers doped with erbium and powered by tiny laser chips are revolutionizing the way signals are regenerated for transcontinental communications and for fast data transmission over fiber-optic networks...

By Emmanuel Desurvire

Living Together

Parasites and their hosts have devised many odd strategies-perhaps even sex-in their endless game of adaptive one-upsmanship. Yet sometimes they seem to cooperate.

By John Rennie


  • Letters

    Letters to the Editors, January 1992

  • Errata

  • TechnoFiles

    Green Machine

  • Recommended

    Book Reviews, January 1993

  • 50, 100 & 150 Years Ago

    50 and 100 Years Ago, January 1992

  • Profile

    A Troubled Homecoming

  • Mathematical Recreation

    Coping with Math Anxiety

  • Amateur Scientist

    How to Generate Chaos at Home

  • Science and the Citizen

    Venus Revealed

  • After the Inferno

  • Rocky Rendezvous

  • Report Card

  • Under Construction

  • Bonus Game

  • Tacky Lasers are the Tiniest yet

  • Turing Test

  • Inside Job

  • Population Pressure

  • Departments

    No Tipping, Please

  • Essay: An Inner-City Education

  • Technology and Business

    Growing Strong

  • Explosive Images

  • Current Event

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