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A piece of ice roughly four times the size of Manhattan island broke free of the Petermann Glacier in Greenland yesterday, according to the University of Delaware.The last time the Arctic lost a piece of ice that large—roughly 100 square miles—was 1962.In a press replica Breitling Navitimer Chrono-Matic watches released issued Friday, UD Associate Professor of Physical Ocean Science and Engineering Andreas Muenchow explained that the freshwater stored in this ice island could keep the Delaware or Hudson rivers flowing for more than two years. It could also keep all U.S. public tap water flowing for 120 days.Outside photographer Sian Kennedy was in Greenland to shoot Wells Towers April 2008 story of his and his fathers trip to the island. See the gallery here.--Michael Webster

The VO2 max in these dogs canreach 200. In Vacheron Constantin replica watches comparison, when Lance Armstrong was in top shape for the Tour de France,his extraordinarily high human VO2 was around 85! Fat seems to be the key tothese dogs' remarkable endurance. Amazingly, they can run 100 to 130 miles a day, for nine to 12 days, with only short rest intervals. Many of them seem to gain energy, endurance, and enthusiasm as the race progresses,finishing in better condition than when they started. They have a stunning ability to convert food to energy.

You can also go to Bhutan June 14 to 25, where Replica Franck Muller watches you can trek, raft, mountain bike, and experience the local culture as you create your film. And if youre looking for something closer to home, check out the Teva Mountain Games film school, June 2 to 9 in Vail, Colorado, when you can get up close and personal with the athletes. Its the most popular offering, so book a spot while you still can.--Aileen Torres