I seem to recall it isn't the ice already floating in the water they are concerned with, I would hope as scientists they are aware of the effect of volume displacment. IIRC, it is the Antarctic ice cap and the Glaciers not in the water, this is where some scientists say the rise in sea levels will come from.

I don't think I have ever heard anything about a 60M rise in sea levels though, more like 5M, just enough to wipe out most of the coastal regions and islands we know now.

Jason
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