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 October 22, 2007
 SEPTEMBER 2002 CONTENTS
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September 2002 issue contents
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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
departments
 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
columns
 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?
 News Scan Briefs



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