talesin
firstly, the points you present may very well be true, but they are not proof that man made activities are causing this. ice has been disappearing since the last ice age, this is not a new phenomena. even capt cook saw ice bergs breaking when he sailed down to antartica.
instead of repeating how ice is melting concentrate on direct prrofs that explain why this happens. is there more melting now than five hundred years ago ? is the rate of increasing temp match industrial pollution output levels ?