In his last sermon, the Holy Prophet Muhammad (PBUH) bore testimony from those gathered that he had delivered the message from Allah to the people, he further went on to say that those that are present should pass the message onto those that are not present (i.e. the next generation and so on) and maybe they will understand the message better.
The message he brought remains unchanged to this day, yet it is as fresh as tomorrows newspaper; as new research and discoveries go on to prove the claims made in the Quran.
It makes you wonder; how can a person, who lived over 1400 years ago have possessed scientific knowledge far more advanced than the time/age within which he lived? Knowledge of things that have just recently been discovered in the last 100 or so years?