December 2003

A Field Guide to the Invisible Universe

At least 96 percent of the cosmos cannot be seen through any telescope, but what we cannot detect may hold the secret of our fate

by Martin Rees and Priyamvada Natarajan

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December

Departments

Reviews: Best of 2003

Letters

Contributors

Letter fro? Discover

NeuroQuest

How your body mistakes a cold front for a heat wave
by Eric Haseltine

Bogglers Solution

by Scott Kim

Bogglers

Mirror Mirror
by Scott Kim

Reviews

Sky Lights

We live in an irregular, mismatched universe. Take our moon, for example
by Bob Berman

Emerging Technology

A revolutionary idea that could convert critics of these virtual worlds
by Steven Johnson

The Biology of . . .Baby Talk

Why scientists go gaga over infants' goo-goos
by Mary Duenwald

Vital Signs

A young man in perfect health lies paralyzed by an unknown pathogen
by Sheri Fink

Discover Dialogue: Chemist George Whitesides

What is intelligence? Where does life come from? Those are the big questions
by David Ewing Duncan