Imagery Update: Week of December 12th http://t.co/h8vwgZQu | #geospatial #GIS...
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The natural landscapes shown as captured by satellite imagery is as beautiful as anything artists have ever created. Some of the colors shown in the video may seem otherworldy. Most of those color anomalies are due to the fact that remotely sensed images have more information in them than just what we see in the visible portion of the electromagnetic spectrum. Some of these images are processed to show different bands so we can visually interpret data such as what is in the near infra-red band, skewing the color palette. Via Seth Dixon Delete the scoop?
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If All of Earth's Water was put into Single Sphere, from the USGS Water Science School...
"This picture shows the size of a sphere that would contain all of Earth's water in comparison to the size of the Earth. The blue sphere sitting on the United States, reaching from about Salt Lake City, Utah to Topeka, Kansas, has a diameter of about 860 miles (about 1,385 kilometers) , with a volume of about 332,500,000 cubic miles (1,386,000,000 cubic kilometers). The sphere includes all the water in the oceans, seas, ice caps, lakes and rivers as well as groundwater, atmospheric water, and even the water in you, your dog, and your tomato plant."
The sphere does not include the potential water that some scientists believe may be trapped in the mantle (and thus not accessible on the surface). For more about water that is not on or near the surface, see: http://news.nationalgeographic.com/news/2002/03/0307_0307_waterworld.html Via Seth Dixon 
Gary Robertson's comment,
May 7, 2012 9:36 PM
Water is also tied up in hydrated minerals in the rocks of the earth's crust. While not "free" it is still significant and is occasionally freed through subduction and volcanic activity. Furthermore, the earth's mantle may contain even more water than the rest combined! So, maybe the Single Sphere should be larger by more than the cube root of 2, or about 1,083 miles in diameter. See mantle water data at http://news.nationalgeographic.com/news/2002/03/0307_0307_waterworld.html
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