there was a catacylsmic flood which wiped out nearly all life on earth about 5000 or so years ago, and science can prove it.

another worldwide catastrophe is also expected sometime in the next 20 years or so, but not a flood, more a series of earthquakes, famines, weird astronomical events, plagues of insects, and much of earth being burned up.

source: the bible.

btw, earth is not a spinning ball, that's one of the biggest conspiracies there is ;-)