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COLUMNS
Field Notes • Spin Control
Softer than cotton, stronger than steel, spider silk has been the fabric of the future for centuries. Now biotechnologists are only a few steps away from synthesizing it
MAY R. BERENBAUM
ESSAYS & COMMENT
Ex Libris
The World-Wide Web can release students and teachers from the tyranny of the textbook-but only if they want to be free
ROGER R. BLUMBERG
FEATURES
There's No Space Like Home
Why look over the IRn-bow? Three dimensions offer topological thrills galore
DANIEL ASIMOV
Cover Story • Forever Young
Can DHEA temper the ravages of time? Some investigators can't afford to wait for the answer.
BURKHARD BILGER
On Common Ground • Placid in Plaster
When data do not speak, recognition, too, is silent
PHOTOGRAPHS BY ROSAMOND PURCELL
TEXT BY STEPHEN JAY GOULD
Germinal Velocity
Life emerged in a burst of fecundity. Ever since, it has struggled to keep from running away with itself
STUART A. KAUFFMAN
REVIEWS
Mesozoic Errors
When it comes to dinosaurs, educational software has some evolving to do
JOHN W. MERCK JR.
Low-Pressure Zone
A cool breeze amid the heat and noise of the on-line fairground
JAMES S. SWEITZER
Books in Brief • Origamic Chemistry
PLUS: frozen heroin addicts; mathematics and music
LAURENCE A. MARSCHALL
DEPARTMENTS
Initial Conditions • Editor's Notebook
Working Hypotheses • Exercise for Excellence
RODNEY W. NICHOLS
Peer Review
Letters from Readers
Quanta
Environmental peace talks; supercold matter; how nerves branch; killer dolphins; backward lightning
Strange Matter
First Home-Organizing Software for Underachievers
ROZ CHAST
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