Actually there is a scientific study going on now that there almost definitely was a flood, but it didn't take the whole world.

Well, no, really, there just isn't, at least not during human memory. I'm sorry, but this is something I teach. The origins of Near Eastern flood mythology are pretty well understood. There were certainly floods, just as there are now, but nothing on the catastrophic level you see in the myths.

And while science certainly does change its positions, it only does so in the face of new evidence.