Okay! Today's topic: Genesis and the ice age.
So Noah built the Ark and everything, and the Flood destroyed the whole world. Or, we might even say that THE WORLD ENDED. Anyway, after the Ark landed on the mountains of Ararat, and Noah and the menagerie disembarked, God promised never again to destroy the Earth with a flood. And he blessed Noah's family and told them to be fruitful and multiply, and replenish the Earth.
This is where it gets interesting.
So in Genesis 10 is the Table of Nations, listing off all the kids and their kids's kids, who went on to fill up all the corners of the world, and interbred until their skin became lighter or darker, forming the different 'races'. (Did you know that the Bible recognizes no races? There are tribes and nations, families and tongues, but only one race. The human race.)
So then we get to Genesis 11.
Gen 11:1-4
Now the whole world had one language and a common speech.
As men moved eastward, they found a plain in Shinar and settled there.
They said to each other, “Come, let's make bricks and bake them thoroughly.” They used brick instead of stone, and tar for mortar.
Then they said, “Come, let us build ourselves a city, with a tower that reaches to the heavens, so that we may make a name for ourselves and not be scattered over the face of the whole earth.”
And yet God had told them to scatter. Wanna see why?
Science tells us that there was this thing called an ice age.

(Actually, scientists like to think there was more than one, but they also assume that the Earth is a lot older than it was. No, there was only one ice age, but even just one can mess up the landscape pretty well.)
The Earth was a lot warmer before the Flood, and there's a lot of theories as to why. Anyway, when THE WORLD ENDED, the atmosphere cooled a lot, while the oceans remained warmer for a while. This caused some really severe freezing at the poles, and the oceans froze and froze until the glaciers came at least as far south as, say, the Great Lakes.
The result of the lower oceans is that all those land bridges were open. Like the one between Australia and the Asian continent, and the one from Russia to Alaska.

So God told Man to get with it and get to all the continents while the ice age was on, before the land bridges closed. And Man was all like, "Nope, gonna stay riiight here!"
Imagine what would have happened if every race in the world was stuck on the European/Asian continent.

But the Lord came down to see the city and the tower that the men were building.
The Lord said, “If as one people speaking the same language they have begun to do this, then nothing they plan to do will be impossible for them.
Come, let us go down and confuse their language so they will not understand each other.”
So the Lord scattered them from there over all the earth, and they stopped building the city.
That is why it was called Babel -— because there the Lord confused the language of the whole world. From there the Lord scattered them over the face of the whole earth.
Then we come down to Abram/Abraham pretty quickly. God moved him out of Ur and ("Goin' out West!") to Israel. Or Caanan, as it was then. And we can tell the ice age was still on, because it wasn't all desert.
Like when Abram and Lot had to part ways, and Abram let Lot have first pick.
Gen 13:10-12
Lot looked up and saw that the whole plain of the Jordan was well watered, like the garden of the Lord, like the land of Egypt, toward Zoar. (This was before the Lord destroyed Sodom and Gomorrah.)
So Lot chose for himself the whole plain of the Jordan and set out toward the east. The two men parted company:
Abram lived in the land of Canaan, while Lot lived among the cities of the plain and pitched his tents near Sodom.
Know what that area looks like today?

Not much like Eden.
Then in Genesis 14 we come to the five kings who came out to conquer Sodom and Gomorrah. And among the battling, we come to verse 10.
Now the Valley of Siddim was full of tar pits, and when the kings of Sodom and Gomorrah fled, some of the men fell into them and the rest fled to the hills.
Tar pits? Wait a minute. Like the ones at LeBrea? I thought there were only tar pits during the ice age!

...oh. Right.
Years and years later, when Israel came out of Egypt and went back to Caanan/Israel, the climate had stabilized into pretty much modern-day, because it was all desert.
Thanks for coming along with me on my little lecture! Science supports the Bible so very well. It's just interpreting the facts through a worldview that gets tricky.