| Reuters: A chunk of ice bigger than the area of Manhattan broke from an ice shelf in Canada's far north and could wreak havoc if it starts to float westward toward oil-drilling regions and shipping lanes next summer, a researcher said on Friday. Global warming could be one cause of the break of the Ayles Ice Shelf at Ellesmere Island, which occurred in the summer of 2005 but was only detected recently by satellite photos, said Luke Copland, assistant professor at the University of Ottawa's ... |