1. The Big Bang Theory does not support the story of creation as told in the book of Genesis, nor is there any scientific evidence for the existence of an original man named Adam who was made from dirt, a woman named Eve who was made from his rib, or a talking snake who tricked them into leaving paradise. Sorry if this sounds condescending, but I can't help but poke a little fun at people who really believe this stuff.
2. There is some historical evidence for some of the particular events mentioned in the bible. This is neither surprising, nor unique to Christianity. There is also historical evidence for events mentioned in the Koran, the Torah, the Bhagavad Gita, Homer's "The Iliad" and "The Odessey," Beowulf, etc. Many of the great mythologies are based on a grain of truth; the one you subscribe to is no exception. There are far more historical falsehoods in these writings, however, than truths... just like in the Christian bible.
3. The facts concerning the true authorship of the New Testament are not known, although there is a great deal of evidence indicating that its books were written up to a few hundred years after the crucifixion (and therefore, obviously, not by eyewitnesses). Following its original composition, the bible has been repeatedly edited, added to, and subtracted from by a great many people in positions of power and influence, to suit their own agendas.
4. Yes, religious men have made important scientific discoveries, though this has largely been despite their religious beliefs, rather than because of them.
I'm stepping out of this conversation now, as it is clearly becoming circular. As I stated previously, I have my own understanding of and relationship with "divinity," and am quite comfortable accepting the word of science over the word of humans who have claimed to speak in limited (and limiting) terms, on divinity's behalf.