Reply #13: It's pretty much been covered by other posters but

[eyepaddle]

yes, it's the melting Ice which is currently not in the oceans which will cause a sea level rise. The Ice over much of Antarctica is aprroximately 10,000 feet thick. There is little controversy about how much sea level would rise due to melting icecaps.

Add to that widespread alteration of ecosystems--e.g. species habing to move higher up a mountainside in order to survive--wgar happens to them when there is no "higher" left? This also means that tropical diseases will move into formerly non-tropical areas. Think how much fun we are having with West Nile virus, how much cooler would it be if it were Dengue or Malaria we were dealing with?

And it goes on and on........