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Scientific American - September 2010
Special
iSSue
the
$5.99
www.scientificAmericAn.com
end.
Or is it?
The eternal fascinations
—
and
surprising upsides
—
of endings
InsIde:
Cheating death
How Far Science Can Go
The Paradox of Time
W hy It Ca n’t Stop but Must
What Comes next
Experts Predict the Future
© 2010 Scientific American
september 2010
contents features
scientific american september 2010
■
Volume 303 number 3
S P E C I A L I S S u E
end
INTRODUCTION
38
EternalFascinationswiththeEnd
By Michael Moyer
Why we want to believe that this is humanity’s inal hour.
TECHNOLOGY
68
GoodRiddance
Some human inventions deserve to go.
MEDICINE
42
WhyCan’tWeLiveForever?
By Thomas Kirkwood
By unraveling the mysteries of aging, scientists may be
able to extend our lives.
ENVIRONMENT
74
HowMuchIsLeft?
By Michael Moyer
The lowdown on the planet’s dwindling resources.
RISK ANALYSIS
82
LayingOdds
ontheApocalypse
By John Matson
How experts see the likelihood
of eight doomsday scenarios.
BIOETHICS
50
WhenDoesLifeBelongtotheLiving?
By Robin Marantz Henig
Some doctors think we shouldn’t wait for donors to die
before removing their organs.
FORENSICS
56
DusttoDust
By Arpad A. Vass
The brief, eventful afterlife of a human corpse.
COSMOLOGY
84
CouldTimeEnd?
By George Musser
Recent work in physics suggests
a resolution to the paradox of time.
ANTHROPOLOGY
60
LastofTheirKind
By Wade Davis
As cultures die, knowledge dies with them.
R E S TA RT
92
WhatComesNext
Scientists give their visions of what the future holds.
2
SCIENTIFIC AMERICAN
© 2010 Scientific American
September 2010
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