Given that religion is not (
not, never ever was, never ever will be) a science, you can't debunk it using scientific arguments. Therefore, rational discourse is the only avenue you can take to disprove the validity of the assumptions held by the religious person to the religious person.
I can provide scientific reasons for how humans are made from more than just 'dust' and that the Earth is older than 6,000 years. Those are meaningless, however, to someone who doesn't understand the processes behind the conclusion -- that's why this video was geared towards people with a college education, who would have an idea of how the answers are reached.
In the end, however, you can simply look at history to see the truth.
- There is no historical mentioning of Jesus Christ, or his alleged miracles.
- There is no evidence -- ever -- of a global flood that swallowed up the tallest mountains and killed everyone.
- (And the Epic of Gilgamesh (dated ca. 2,700 B.C.) does not validate the "flood", by the way. According to Bishop James Ussher, whose Young Earth model is widely used by Creationists today, the flood occurred in 2,348 B.C.)
- Of the millions of cases each year, the Catholic church only recognizes a handful as "miracles".
- The single greatest cause of death throughout the last 1,000 years has been "God's will" as proposed by man. So caring of a being would have put a stop to this mindless violence.