May, 2013


GIS Data

Columbia Glacier, in Prince William Sound, showing snow retreat from 1984-2011.

Timelapse Satellite Imagery – View Changes on Earth over Time

The series of Landsat satellites has been collecting global imagery continuously since 1972.  A total of eight satellites and millions of pictures (and trillions of pixels) has resulted in a hugh amount of imagery which, when compiled, visualizes the massive amount of global change over the past thirty+ years.  Landsat […]