文档介绍：THE LIFE CYCLE OF GALAXIES ■ INES FOR AIDS ■ CAN WE STOP AGING?
JUNE 2002 $
A New Twist puting
SPINTRONICS
Savant Syndrome:
The Genius of Rain Man
A Perfect Cup:
The Science of Coffee
COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC.
june 2002
SCIENTIFIC AMERICAN Volume 286 Number 6 features
BIOTECHNOLOGY
38 Hope in a Vial
BY CAROL EZZELL
Potential AIDS ines are in late-stage clinical trials, but their ability to fight the disease remains to be seen.
COSMOLOGY
46 The Life Cycle of Galaxies
BY GUINEVERE KAUFFMANN AND FRANK VAN DEN BOSCH
Astronomers are on the verge of explaining the bewildering variety of galaxies.
ZOOLOGY
60 Disturbing Behaviors of the Orangutan
BY ANNE NACEY MAGGIONCALDA AND ROBERT M. SAPOLSKY
Studies of these great apes show that some males pursue an unexpected and disquieting evolutionary strategy.
INFORMATION TECHNOLOGY
66 Spintronics
BY DAVID D. AWSCHALOM, MICHAEL E. FLATTÉ AND NITIN SAMARTH
Microelectronic devices pute with the spin of the electron may lead to quantum microchips.
PSYCHOLOGY
76 Islands of Genius
BY DAROLD A. TREFFERT AND GREGORY L. WALLACE puting with
The artistic brilliance and dazzling memory that electron spins
sometimes pany autism and other disorders
hint at how all brains work.
CHEMISTRY
86 plexity of Coffee
BY ERNESTO ILLY
One of life’s simple pleasures is really quite
complicated, with hundreds pounds
defining coffee’s flavor and aroma.
ESSAY
92 No Truth to the Fountain of Youth
BY S. JAY OLSHANSKY, LEONARD HAYFLICK
AND BRUCE A. CARNES
Beware of products claiming scientific proof
that they can slow aging.
COPYRIGHT 2002 SCIENTIFIC AMERICAN, INC.
departmentsSCIENTIFIC AMERICAN Volume 286 Number 6
8SA Perspectives
The enduring battle with malaria.
9How to Contact Us
9 On the Web 20 96
10 Letters
14 50, 100 & 150 Years Ago 30 Innovations
16 News Scan A Harvard Medical School dropout aims to usher in
the personal-genomics e