A University of Delaware researcher reports that an 'ice island' four times the size of Manhattan has calved from Greenland's Petermann Glacier.

Scientists said on Tuesday the ice shelves in Canada's High Arctic have lost a colossal mass measuring 19 square miles.

Eight square miles worth of giant ice sheets broke off an ice shelf in the Canadian Arctic last week, and scientists said on Tuesday that global warming could be to blame.

The following editorial appeared in the Fort Worth Star-Telegram on Friday, Jan. 5: The threat of global warming keeps manifesting itself in ways that we would be foolish to ignore.

A giant ice shelf the size of 11,000 football fields has snapped free from Canada's Arctic, scientists said. The collapse was so powerful that earthquake monitors 155 miles away picked up tremors from it.