This is an interesting article on glacial melting!! Here is a bit of the article found at the address above:
"An increase in surface air temperatures appears to be causing the glaciers to flow faster, albeit at the still-glacial pace of eight miles to nine miles a year at their fastest clip, and dump increased volumes of ice into the Atlantic.
That stepped-up flow accounted for about two-thirds of the net 54 cubic miles of ice Greenland lost in 2005. That compares with 22 cubic miles in 1996, Rignot said."