06/20/2001 - Updated 02:32 PM ET
Maybe time travel could be possible
Q: I believe Einstein's General Relativity Theory mathematically proved that time travel into the past is impossible. Do the recent experiments showing that light can be slowed, then returned to its normal speed, have any theoretical implications for time travel?
http://www.usatoday.com/news/science/wonderquest/2001-06-20-time-travel.htm
Consistency with Special Relativity
Einstein special relativity (SR) is able to prove based on its premises that nothing can propagate faster than the speed of light in forward time. Is our result for the speed of gravity an experimental falsification of SR? The correct answer must be a qualified "yes and no." Strictly, the minor new interpretation of SR needed for consistency with our result is no more a falsification of SR than GR was a falsification of Newtonian gravity. In both cases, the earlier theory was incomplete rather than wrong. We will now examine exactly what must change about SR for full consistency with all existing experimental evidence and this new result as well.
http://www.ldolphin.org/vanFlandern/gravityspeed.html
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NEWS (January 31, 2003): There is no funding available for the Breakthrough Propulsion Physics (BPP) Project.
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I've a subscription to Scientific America and will looking around and see whats in the archives and post anything of interest after a bit...