Of course, Quran is full of scientific facts...
Salam,
My brother in humanity Heigou, I just want to tell you few words and try to answer some of your questions.
I do respect all religions, though I consider that believing that Jesus is the son of god or even god himself is foolish. Even if I agree with you and believe that really your bible is flawless and never been modified. why then in our quran which is from God , too, god says that whoever believes that son in the son of God is a disbeliever and whoever thinks that God is one of a three in trinity priciple is a disbeliever. go back to Quran, surah "al-Maida or Table spread" verse 17. God says: " They disbelieved indeed those that say that Allah is Christ the son of Mary. Say: "Who then hath the least power against Allah, if His will were to destroy Christ the son of Mary, his mother, and every one that is on the earth? For to Allah belongeth the dominion of the heavens and the earth, and all that is between. He createth what He pleaseth. For Allah hath power over all things (17)." dont you think I am right to disbelieve in your creed since it is refuted by God. If Bible hadnt been modified and it is really purely from God, why God would contradict himself by saying in one book Jesus is my son and say in Quran I m the Father of anyone.
Other verses from the same surah "Al-Maida; Table spread" verses (72.73.74.75.76).
Well, yes the church men were strict and corrupt. they were strict because their religious teachings were very strict and corrupt because they use religion just to serve their own interests and they do not practice the Islamic teachings,too. If you go back to history, you will find how the church men were before the rennaissance.
Yes, there are too many verses which talk about scientific facts have been discovered in the tweenith century and still havent discovered yet. I will do my best to mention most of them. but i will give some examples.
In surah "al-Rahman or The most gracious", God says: " He has let free the two Seas, meeting together: (19) Between them is a Barrier which they do not transgress

20) Then which of the favors of your Lord will ye deny? (21) Out of them come Pearls and Coral: (22)" . The fact that there are two seas which are seperated by a barrier. the water of the first sea is sweet and the other is salty. This fact has been discovered by a western scientist in in the end of the tweenith century. if i am not wrong, this fact was discovered by Cousteau. He converted to islam after knowing this fact.
My friend Heigou, If Quran was not written by God, who do you think may mention this fact fourteen centuries ago.
There are many other scientific facts, I am unbale to mention them now, but i will collect me and my brothers and sisters the verses which talk about scientific issues.
thanks.