ceview writes: The speed of light appears to be not constant at a quantum level. It may appear to be dependent more on the electric charge of the vacuum. Also published in the European Physical Journal D http://epjd.epj.org/ Does this really have implications to GPS, quantum gravity?
"The number of Unix installations has grown to 10, with more expected."
-- The Unix Programmer's Manual, 2nd Edition, June, 1972