Here's National Geographic, on the possible origin of the Noah's Ark/Flood story:
Researchers generally agree that, during a warming period about 9,400 years ago, an onrush of seawater from the Mediterranean spurred a connection with the Black Sea, then a largely freshwater lake. That flood turned the lake into a rapidly rising sea.
Please read that paragraph again, very carefully. You WILL be tested.
Let's try filling in the blanks.
Researchers generally agree that, during _ _______ ______ about 9,400 years ago....
Did you fill in the blanks correctly? Did you say "a warming period"? Good. Let's try another section.
Researchers generally agree that, during a warming period about ______ years ago....
Very good, class. There was a warming period 9,400 years ago. Here's a nice picture of Mount Ararat, the mountain where Biblical scholars believe Noah's ark came to rest after the great flood.
Let's discuss what caused this flood. Please pick the cause you think most likely.
b) Climate cycles caused by natural fluctuations in the environment, the earth's core, sunspots, and other natural causes.
c) Adam and Eve's insistence on driving a Hummer, plus Cain and Abel's arrogant refusal to recycle.
d) Fred Flintstone and Barney Rubble had a massive carbon footprint, but didn't have a cap-and-trade system.
e) Al Gore had not yet been born.
f) We don't have a freakin' clue.
Regardless of what you think about the cause of the glaciers melting 9,400 years ago, people found a way to blame themselves or other people for the resulting flood. (Genesis 6:11 Now the earth was corrupt in God's sight and was full of violence. God saw how corrupt the earth had become, for all the people on earth had corrupted their ways. So God said to Noah, "I am going to put an end to all people, for the earth is filled with violence because of them." etc etc etc....)
We like to believe that the universe is all about us, whether it's a comet in the night sky (omens), the location of planets influencing our luck (astrology), or the earth getting warmer or cooler and causing floods or ice ages (religious flood stories, or the cult of anthropogenic global warming).
The reality? We really wish that the weather was all about us.