June 2, 2009 7:14 am Aging Satellites May Cause GPS Failures We rely on them to get us places, but a report by the investigative arm of Congress warns of an increased likelihood that aging satellites may cause GPS failures as early as next year. US & World Videos 1:21 Watch the trailer for NBC's My New Favorite Olympian 1:46 Heat waves getting hotter, longer, and more frequent because of climate change 1:03 More than 2,000 people buried alive in Papua New Guinea landslide, Government says 2:33 Group of UCLA workers to walk off job over Gaza war protest response 45:40 How this surgeon wants to reinvent the American urgent care center