I was only able to watch part of the debate last night between Bill Nye and Ken Ham. I have heard various versions of who "won" the debate. That really doesn't matter, because truth is not determined by majority opinion or "winning" a debate. Truth does not change.
The bottom line is that modern man tries to determine the truth about the pre-flood world and the pre-fall world, based on his observations of the present fallen world from a perspective that is tainted by sin. Such observations are unreliable and mean nothing in light of the fact that God has told us what He did. The fall produced great changes by bringing the curse into the world, and the post-fall, pre-flood world no longer exists. "For this they willfully forget: that by the word of God the heavens were of old, and the earth standing out of water and in the water, by which the world that then existed perished, being flooded with water" (2 Peter 3:5-6, NKJV).