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| Time’s arrow |
| Can you visit the dinosaurs? Buy Einstein a beer? Dennis Overbye finds out |
| There
was a conference for time travellers at MIT earlier this
spring. I’m still hoping to attend, and although
the odds are slim, they are apparently not zero despite
the efforts and hopes of deterministically minded physicists
who would like to eliminate the possibility of your creating
a paradox by going back in time and killing your grandfather.
“No law of physics that we know of prohibits time
travel,” said Dr J. Richard Gott, a Princeton astrophysicist.
Dr Gott, author of the 2001 book Time Travel in Einstein’s
Universe: The Physical Possibilities of Travel Through
Time, is one of a small breed of physicists who spend
part of their time (and their research grants) thinking
about wormholes in space, warp drives and other cosmic
constructions, that “absurdly advanced civilisations”
might use to travel through time... | Read.. |
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| Like
a stable cloud |
What happens when neutral atoms are cooled in a
chamber? The question beckoned physicists all over
the world to understand fundamental nature of atoms.
Why? Because in the next few decades, extremely
cold atoms to be used in atomic chips will hold
the key in nanotechnology ... | Read..
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| QED: Sadness on sale
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Last week, while the worldwide media continued showering accolades
on the New York Times columnist Thomas Friedman’s best
selling book The World is Flat, a seemingly obscure
research paper appeared in the British Medical... | Read.. |
| Recommended:
Human origins, in a nutshell
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The
complete world of human evolution
Chris Stringer and Paul Andrews
Thame & Hudson; ? 24.95... | Read.. |
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Why Corner
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| Why doesn’t green grass catch fire easily? |
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Over the last 40 years, heart specialists have learned a lot about the way cholesterol behaves in the body, much to the benefit of people destined to suffer heart attacks or strokes ? at least half of the population. ... | 
