I sometimes wonder if weather was a bit cooler a few thousand years ago. I worked for a while in Crete by the sea, and there were some basins in the rock of the sea bed that were said to have been Minoan grain stores, but the sea levels have risen and now they'r under water. And I read the same thing about the Scilly Isles off Cornwall - that at exceptionally low tides you can find walls and such part buried in the shifting sands. Was the global sea level lower in mythological times? Could it have been more ice at the poles from a cooler climate?