Scientific American Magazine Vol 290 Issue 4

Scientific American Magazine

Volume 290, Issue 4

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Features

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

R. Douglas Fields

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

Stephen J. Freeland and Laurence D. Hurst

The First Nanochips

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

G. Dan Hutcheson

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

Blastoffs on a Budget

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

Joan C. Horwath

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?

David R. Ardila

Departments

Data Points: April 2004

Brief Points: April 2004

Ask the Experts: April 2004

Fuzzy Logic: April 2004

Magic Water and Mencken's Maxim

Making Proteins without DNA

A Surplus of Women

Letters

Tracking Tritium -- Chasing Dengue -- Questioning Evidence

Patent Enforcement

Bluffhead

Breaking Out of Orbit

The Brain in Love

Draining the Language out of Color

Complete Burn

Visiting Royalty

Plug-and-Play Robots