文档介绍：TO BEAT BACTERIA, STOP MUTATIONS • GLOBALIZATION AND POVERTY
How to Save
Millions
SCIENTIFIC of Children from
Rotavirus
APRIL 2006
AMERICAN
Cultured Apes and
Evolving Intelligence
ic Triggers of
Solar Flares
Plugged-In
Hybrid Cars
COPYRIGHT 2006 SCIENTIFIC AMERICAN, INC.
contentsapril 2006
SCIENTIFIC AMERICAN Volume 294 Number 4 features
ASTROPHYSICS
38 The Mysterious Origins of Solar Flares
BY GORDON D. HOLMAN
Researchers begin to understand how the dynamics of the solar ic
fi eld trigger titanic eruptions of the sun’s atmosphere.
MEDICINE
46 New Hope for Defeating Rotavirus
BY ROGER I. GLASS
After 30 years of investigation, ines against the leading cause of
lethal childhood diarrhea are ready for market.
COVER STORY: INFORMATION TECHNOLOGY
puting with Quantum Knots
BY GRAHAM P. COLLINS
Braiding the spacetime trajectories of bizarre particles called anyons
might be the best way to make puting practical.
INTELLIGENCE AND EVOLUTION
64 Why Are Some Animals So Smart?
BY CAREL VAN SCHAIK
The unusual behavior of orangutans in a Sumatran swamp suggests
that a culture of learning drives increases in brainpower.
TRANSPORTATION
72 Hybrid Vehicles Gain Traction
BY JOSEPH J. ROMM AND ANDREW A. FRANK
As car buyers turn to fuel-sipping gasoline-electric hybrid vehicles, a
new generation of even greener hybrids is ing over the horizon.
BIOTECHNOLOGY
80 An Antibiotic Resistance Fighter
BY GARY STIX
A pound stops bacteria from evolving defenses against antibiotics
by preventing them from mutating.
ECONOMICS 38 The sun’s
ic turmoil
84 Does Globalization Help or Hurt the World’s Poor?
BY PRANAB BARDHAN
The answer is: both. The real question is how to maximize the helpfulness and minimize the harm.
ENTIFIC AMERICAN 5
COPYRIGHT 2006 SCIENTIFIC AMERICAN, INC.
SCIENTIFIC AMERICAN Volume 294 Number 4
departments
8 SA Perspectives
The . loses its grip on particle physics.
10 H