They are by their nature: one is of human and the other of divine origin. Science is a product of our mind; faith is a product of God. Science can only reveal that which is of this world. Science cannot prove or disprove God. He is not subject to scientific method or experiment.
Why should Christianity be "afraid" of science?
There is absolutely no reason to be afraid of science. To the contrary. Science shows us how incredible is the Creation. It also shows us how different we are from God: for what we see in nature is something we could never design, or make. It truly brings home the verse that our ways are not God's ways and our thoughts are not His thoughts. (cf Isa 55:8)
The world is a painting that tells us a lot about the Artist. It is a building that tells us a lot about the Architect.
They [science and faith] are by their nature: one is of human and the other of divine origin. Science is a product of our mind; faith is a product of God. Science can only reveal that which is of this world. Science cannot prove or disprove God.
I'm not sure I understand your view that science is of human origin. I just recently quoted John 1:1-3, 10. If you haven't already addressed this, do you disagree that God creates all things, including science?
Since you have a more scientific mind than I do, I'd be interested in what you thought of the following page from a website that purports to show that science and faith can work together just fine: Checkable Biblical Accuracy. Some of the proofs looked a little sketchy, but I thought it was interesting.