Huge ice island carves off Greenland glacier

A lake of meltwater on the surface of the Petermann Glacier in this July 6, 2009 handout photo.[Photo/Agencies] 

An image made during the eighth pass of a section of the Petermann Glacier by the 'heli-cam', a remote camera attached to a small single engine helicopter, triggered from inside the cockpit by remote control, in this July 13, 2009 handout photo. An ice island four times the size of Manhattan broke off from one of Greenland's two main glaciers including the Petermann Glacier, scientists said on August 6, 2010 in the biggest such event in the Arctic in nearly 50 years.[Photo/Agencies]