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Features

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 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

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

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

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

Blastoffs on a Budget

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

By Joan C. Horwath

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