Each of us can make a positive difference by stepping up and doing our best / Becoming Planet Citizens
File:'Thin Blue Layer' of Earth's Atmosphere m.jpg
From Green Policy
'Thin_Blue_Layer'_of_Earth's_Atmosphere_m.jpg (426 × 240 pixels, file size: 15 KB, MIME type: image/jpeg)
- Look at how thin our atmosphere is
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|current||16:59, 11 April 2015||426 × 240 (15 KB)||Siterunner||http://www.greenpolicy360.net/w/Category:ThinBlueLayer Category:Green Graphics|