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Scientific American
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October 22, 2007
SEPTEMBER 2002 CONTENTS
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FEATURES
How to Build a Time Machine
By Paul Davies
It wouldn't be easy, but it might be possible
Real Time
By Gary Stix
The pace of living quickens, yet an understanding of things temporal eludes us
PHYSICS
That Mysterious Flow
By Paul Davies
It feels as though time flows inexorably on. But that is an illusion
Clocking Cultures
By Carol Ezzell
What is time? The answer varies from society to society
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PHILOSOPHY
A Hole at the Heart of Physics
By George Musser
Physicists can't seem to find the time--literally. Can philosophers help?
From Instantaneous to Eternal
What happens in slices of time, from an attosecond to a billion years
FUTURE TIMEPIECES
Ultimate Clocks
By W. Wayt Gibbs
Atomic clocks are approaching the limits of useful precision
TECHNOLOGY
A Chronicle of Timekeeping
By William J. H. Andrewes
Our conception of time depends on the way we measure it
BIOLOGY
Times of Our Lives
By Karen Wright
Biological clocks help to keep our brains and bodies running on schedule
Remembering When
By Antonio R. Damasio
Several brain structures contribute to "mind time," organizing chronologies of remembered events
REVIEWS
Amateurs Take On the Universe
The Editors Recommend
SA PERSPECTIVES
The Chronic Complaint
VOYAGES
A Promenade with Prosimians
50, 100 AND 150 YEARS AGO
Evolving Machines -- Dammed Nile -- Shaky Stocks
LETTERS TO THE EDITORS
Letters
ANTIGRAVITY
Einstein's Hot Time
PUZZLING ADVENTURES
Venture Bets
Click here to see the solution
SKEPTIC
Smart People Believe Weird Things
NEWS SCAN
Unsettled Air
The unknown effects of the towers' collapse
After the Fall
New thinking to make skyscrapers safer
The Terminator's Back
Controversial scheme might prevent transgenic spread
Radio Space
A renegade plan to show that spectrum isn¿t scarce
Staying Open
Universities worry about the strain on academic freedom in the face of classified research
By the Numbers:
Affording a Home
What does it take to buy a reasonably priced house?
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15 Answers to Creationist Nonsense
Taming Baby Rage: Why Are Some Kids So Angry?
Elephants Use Smell of Fear to Sort Friend from Foe
News Bytes of the Week—Watson in Disgrace
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Priceless artifacts' new home
21 dead in Colombian gold mine
Cave drowning tragedy
Russian capsule docks with ISS
World's biggest airliner approaches
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Breaking Science News from Reuters
Updated today at 3:46 PM
NASA begins countdown for launch
NASA begins countdown for Tuesday shuttle launch
Rugby enthusiasm prompts online marriage bid
Microsoft offers Latin market a Zune of their own
U.S. panel against cold drugs for kids under 6
Yahoo chief marketing officer latest exec to leave
Vonage says sued by AT&T; for patent infringement
Poor indoor air quality may worsen lung disease
Some breast cancers don't respond to chemotherapy
Depression, anxiety tied to allergies in kids
Labor usually successful after c-section for twins
Skype to sell first cell phone through 3: source
Space shuttle crew arrives in Florida for liftoff
AT&T; says plans to participate in wireless auction
CORRECTED: U.S. panel against cold drugs for kids under 6
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