Like I said, there are many different intrepretations of the Bible, and many Christians have no problem reconciling both modern science and their Christian faith. Its important to realize that a lot of biblical intrepretation boils down to how the original texts should be translated.
This idea of God creating over long periods of time is not new, and in fact dates back to even before the theory of evolution ever saw the light of day. In fact, Aristotle believed that God "created the world with potentencies that unfolded over time."
So yes, well some current intrepretations of Biblical text are very hard to defend in this day and age, it does not deal a death blow to Christianity.
Anyway, while we are on the topic of biblical evidence, this debate between William Lane Craig and John Shelby on the historical evidence for the resurrection of Christ is pretty interesting.