More speculation... one heck of a job if you can get it. Make up stuff and get paid.
As the icebergs melt, the earth becomes less dense, which in turn, accelerates its revolutions. Days become shorter, but worse yet, larger objects will have a tendency to escape earth's atmosphere as gravity diminishes.
OK, I'm still working on the details./s
Guess you went to government schools.
...and call yourself a "scientist."
"Why Speculate?", a speech by Michael Crichton (all of the speeches on his site).