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Ice Melting Animation in Google Earth (video animation)
From National Snow and Ice Data Center, this animation shows the Arctic Ice concentrations during the past 90 days as a time animation in Google Earth. Read more here at the Google Earth Blog:
TO VIEW THIS VIDEO CLICK ON:
http://ca.youtube.com/watch?v=O0SnaK4T7qU&
eurl=http://www.gearthblog.com/blog/archives/2008
/08/watch_arctic_ice_melting_in_google.html
Note the gray computer generated circle in the middle.....there is no reason at all to superimpose this unless it is designed to "cover something up".......e.g. a huge opening.........!!