Right you are DA Morgan.
The speed of light does depend on the media. (It is the vacuum speed of light divided by index of refraction assuming a simple media.)
In the cited article there are some remarks about beating the speed of light. An old yellow dog jouranlism trick, a screamer, that gets the attention. The point I am trying to make here is that there are serious problems with causality involved with any putative FTL phenomena.
Anyone who know's about refraction, dispersion etc. will automatically make the mental adjustment in response to such nonsense. However, many do not know what the real problem with FTL actually is. The arguement I gave above requires only simple algebra and the Lorentz (see google) transformation and show the causality problem in an easy way.
Dr. R.
