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City 'Change Pairs' from Landsat
07.23.12
 

The Landsat program has seen a literal world of changes in its 40 years of observing Earth. This interactive compares "before and after" views of some of those changes.


Click on a thumbnail image and drag the white slider bar to compare earlier Landsat views (left) with more recent observations (right).



› Download source images from Flickr
 
 
Images credit: NASA/USGS