February 2002

The 11 Greatest Unanswered Questions of Physics

Resolution of these profound questions could unlock the secrets of existence and deliver a new age of science within several decades

by Eric Haseltine, Illustrations by Dan Winters & Gary Tanhauser

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February

Departments

Bogglers Solutions

Bogglers Solutions
by Scott Kim

NeuroQuest

NeuroQuest
by Eric Haseltine

Bogglers

Bogglers
by Scott Kim

Reviews

Reviews

Sky Lights

Radiation levels are up and our satellite is down
by Bob Berman

The Biology of . . . Hair

Zeroing in on the molecular switches that regulate hair growth
by Robert Kunzig

Works in Progress

Powders, hormones, and herbs may boost performance—riskily
by Karen Wright

Vital Signs

A legendary but surprisingly docile pathogen takes hold in a young man
by Robert A. Norman

Future Tech

A powered exoskeleton could transform the average joe into a supersoldier
by Brad Lemley

Letters