Ice melting across globe at accelerating rate, NASA says

This image shows the changing rate of mass in mountain glaciers on the Gulf of Alaska.

Story Highlights

  • About 2 trillion tons of ice have melted in Greenland, Antarctica, Alaska since 2003
  • Lost amount of water could fill up Chesapeake Bay 21 times, NASA scientist says
  • Most came from Greenland, where losses raised global sea levels .5 mm annually
  • Scientist says sea levels rising 50 percent faster than 15 years ago   more…