Biblical nations and cities, once thought to be mythological (such as the Hittites, the Canaanites, Jericho, and Sodom and Gomorrah), have proven to be historical by modern archaeology. Not surprisingly, the primary road map for Middle East archaeologists has always been the Genesis account, as it has never shown inaccuracy.

The self-proclaimed Messiah, Jesus Christ, incorporated literal Genesis history within His teachings. He spoke of an historical Sodom and Gomorrah, and He spoke of a literal and global flood which devastated the world, ten generations before the time of Abraham. So, Jesus cannot be the Messiah, should Genesis prove fallacious, because He would then be seen as a liar or a lunatic for teaching such "mythologies."
Several hundred tribes and many ancient civilizations offer oral traditions and written records describing a worldwide flood. The details of this flood story vary, but the main themes of this event (as depicted in Genesis) are revealed in composites of these various pagan accounts. The Greenlander tribe says that seashells in mountain-rocks resulted from this global flood. (Which is true; however, the mountains actually uplifted at the close of the flood. Geology shows that sediments rapidly entombed the creatures before tectonic forces caused the mountain uplifts.)

Modern paleontology confirms that kinds of animals have never evolved into "new" kinds of animals. Natural selection does occur within the respective animal kinds, but only because of genetic loss ("speciation"), not because of genetic enhancement (Darwinian evolution). The "races" of humanity did "naturally select," as they moved away from Mesopotamia during the centuries after the Flood, but they did not divergently set off on separate paths of mutation-driven genetic "enhancement" (an oxymoronic notion, as mutations always destroy or merely re-arrange genetic sequences, they never add genetic information).
Dragons ("dinosaurs") have demonstrably been with us throughout human history, and the rock-dating and carbon 14-dating methods are shown to be fraught with unknowable presuppositions and interpretational inconsistencies; so, good reasons to discount the Genesis account seem lacking. Remember, Jesus' integrity is at stake here: He is a liar, or a lunatic, or who He says He is.

Much geological, anthropological, and historical evidence indicates that the Ice Age occurred during the 800 years, or so, after the Flood. Linguistic, historical, and archaeological analyses confirm the historicity of the Tower of Babel debacle (some 200 years after the Flood). The application of Einstein's Theory of General Relativity to the observed cosmos allows a cogent and explanatory theory for a "young" cosmos.
Is Jesus delusional, such that "His Book" is just one big pack of lies? Or, is the Bible all true, and modern-mainstream science has unconsciously (and sometimes consciously) portrayed fiction as fact, as to facilitate societal distrust of Holy Scriptures? Please read OLD EARTH? WHY NOT! to digest much controversial and enlightening information of which most people are unaware.