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The Hidden Members of Planetary Systems

The solar system consists of more than just planets; it is also a beehive of asteroids and comets. Is that the case for other planetary systems, too?

By David R. Ardila

Blastoffs on a Budget

Private ventures seeking to make routine access to space affordable see big potential in going small

By Joan C. Horwath

The Tyranny of Choice

Logic suggests that having options allows people to select precisely what makes them happiest. But, as studies show, abundant choice often makes for misery

The First Nanochips

The First Nanochips

As scientists and engineers continue to push back the limits of chipmaking technology, they have quietly entered into the nanometer realm

By G. Dan Hutcheson
Evolution Encoded
The Sciences

Evolution Encoded

New discoveries about the rules governing how genes encode proteins have revealed nature's sophisticated "programming" for protecting life from catastrophic errors while accelerating evolution...

By Stephen J. Freeland and Laurence D. Hurst
The Other Half of the Brain

The Other Half of the Brain

Mounting evidence suggests that glial cells, overlooked for half a century, may be nearly as critical to thinking and learning as neurons are

By R. Douglas Fields


  • Letters


  • Advances

    Double Distress

  • Missing Movement

  • Magnetic Moods

  • New Path to Ammonia

  • A Regal Bearing

  • Rooting Out Bombs

  • Red with Prejudice

  • Leaving the Host Behind

  • Recommended

    The Brain in Love

  • Skeptic

    Magic Water and Mencken's Maxim

  • Anti Gravity

    Visiting Royalty

  • 50, 100 & 150 Years Ago

    Tracking Tritium -- Chasing Dengue -- Questioning Evidence

  • Perspectives

    Breaking Out of Orbit

  • In Brief

    Data Points: April 2004

  • Brief Points: April 2004

  • Puzzling Adventures


  • Staking Claims

    Patent Enforcement

  • Innovations

    Making Proteins without DNA

  • By the Numbers

    A Surplus of Women

  • Technicalities

    Plug-and-Play Robots

  • Working Knowledge

    Complete Burn

  • Departments

    Fuzzy Logic: April 2004

  • Insights

    Draining the Language out of Color

  • Ask the Experts

    Ask the Experts: April 2004

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