Another way to look at it is faith is knowing something (or hoping that something is true -'imperfect' faith) but not being able to explain it.
Science is certainty, but it sees only as far as your own nose (relative to faith).
Would you rather have a certain bird in your hand, or a cageful hidden in the bush? (okay, this analogy makes no sense..)
Science and faith occupy opposite ends of the spectrum, some people prefer to reside on one side and some on the other.. now if you want to straddle the sides / a little greedy like me you start to look for similarities examining both sides.
Science will explain eventual what faith proposes already.
-I said that.