Nothing fundamentally new. Just improved technology.
Constant speed of light only goes for vacuum. In any kind of medium it is slower.
For going faster it's a little bit more tricky: like michel's article says not the actual light goes so fast but only the signal. This has to do with...
Just as lilithu said, I think you have to totally separate religion and science.
Science is a systematical arrangement of our observations of the world. Apparently our world is organized in a way that we can put together similar observations to obtain theories. A theory can then be used to...