Scientific American ~ October 2009 , Volume 301 Number 4

Date: 28 April 2011, 08:03

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ASTROPHYSICS
38 Black Stars, Not Holes
By Carlos Barcelo, Stefano Liberati,
Sebastiano Sonego and Matt Visser
Quantum effects may prevent true black holes from
forming and give rise to entities called black stars.
NEUROSCIENCE
46 Turbocharging the Brain
By Gary Stix
Will a pill at breakfast improve concentration and
memory—and will it do so without long-term
detriment to your health?
ENERGY
56 Squeezing More Oil
from the Ground
By Leonardo Maugeri
Amid warnings of a possible “peak oil,” advanced
technologies offer ways to get every last possible drop.
ARCHAEOLOGY
64 Lost Cities of the Amazon
By Michael J. Heckenberger
The Amazon tropical forest is not as wild as it looks.
MEDICINE
72 Boosting Vaccine Power
By Nathalie Garcon and Michel Goldman
Modern insights into the immune system have revived
interest in a set of ingredients that can supercharge
old vaccines and make entirely new ones possible.
SECURITY
80 Privacy and the
Quantum Internet
By Seth Lloyd
Courtesy of some of the weirdest laws of physics,
we may someday be able to search and surf the Web
without anyone collecting our data.
INDUSTRY PERSPECTIVES
86 Biotech’s Plans to
Sustain Agriculture
A discussion hosted by Scientific American
Popular movements may call for more organic
methods, but the agricultural industry sees
biotechnology as a crucial part of farming’s future.

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