Lots of evidence. IF you interpret the words "covered the whole world" as they would have been understood at the time they were supposedly written. The idea th

Lots of evidence. IF you interpret the words "covered the whole world" as they would have been understood at the time they were supposedly written. The idea that "the whole world" means what we think of as the globe didn't really emerge until roughly 900 AD. And there is plenty of evidence in Mesopotamia of flood events which are not inconsistent with conceivable dates for the the biblical flood event and which had the potential to have wiped out a civilization (a city/state and its government) -- thus "the whole world".