This illustration file photo shows an Arctic glacier. Experts believe they have uncovered a secret drinker on Sir Ernest Shackleton's polar expedition after opening a crate of whisky buried under Antarctic ice for 100 years.
FILE - These two satellite images provided by NASA taken on July 28, 2010, left, and Aug. 5, 2010, right, shows the Petermann Glacier in Northern Greenland. A giant ice island, seen in image at right, has broken off the Petermann Glacier. A University of Delaware researcher says the floating ice sheet covers 100 square miles (260 sq. kilometers) — more than four times the size of New York's Manhattan Island. The World Meteorological Organization (WMO) says the weather-related cataclysms of July and August fit patterns predicted by climate scientists, although those scientists always shy from tying individual disasters directly to global warming.
This handout photo taken on July 12, 2009 and released by Greenpeace shows a section of the Petermann glacier. A massive ice island four times the size of Manhattan has broken off an iceberg in north-western Greenland, a researcher at a US university said.