Earth Day: It’s easy being green
Blue Marble
This image provided by NASA shows a 'Blue Marble' image of the Earth taken from the The Visible/Infrared Imager Radiometer Suite or VIIRS instrument aboard NASA's most recently launched Earth-observing satellite - Suomi NPP. This composite image uses a number of swaths of the Earth's surface taken on Jan. 4, 2012. The NPP satellite was renamed 'Suomi NPP' on Jan. 24, 2012 to honor the late Verner E. Suomi of the University of Wisconsin. Suomi NPP is NASA's next Earth-observing research satellite. It is the first of a new generation of satellites that will observe many facets of our changing Earth. Suomi NPP is carrying five instruments on board. (AP Photo/NASA)
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