vrijdag 29 februari 2008
donderdag 28 februari 2008
wow, posting stolen from pixites / http://blog.phiffer.org/post/27344630
Left: All the water in the world (1.4087 billion cubic kilometres of it)including sea water, ice, lakes, rivers, ground water, clouds, etc. Right:All the air in the atmosphere (5140 trillion tonnes of it) gathered into aball at sea-level density. Shown on the same scale as the Earth.
- Posted using MobyPicture.com
- Posted using MobyPicture.com
woensdag 27 februari 2008
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